Guide by Frog&Chips :
HYPER INFLATION & CURRENCY
As noted, in countries experiencing hyperinflation, the central bank often prints money in larger and larger denominations as the smaller denomination notes become worthless. This can result in the production of some interesting banknotes, including those denominated in amounts of 1,000,000,000 or more.
By late 1923, the Weimar Republic of Germany was issuing fifty-million Mark banknotes and postage stamps with a face value of fifty billion Mark. The highest value banknote issued by the Weimar government's Reichsbank had a face value of 100 trillion Mark (100,000,000,000,000; 100 billion on the long scale). One of the firms printing these notes submitted an invoice for the work to the Reichsbank for 32,776,899,763,734,490,417.05 (3.28×1019, or 33 quintillion) Marks.
The largest denomination banknote ever officially issued for circulation was in 1946 by the Hungarian National Bank for the amount of 100 quintillion pengő (100,000,000,000,000,000,000, or 1020; 100 trillion on the long scale). image (There was even a banknote worth 10 times more, i.e. 1021 pengő, printed, but not issued image.) The banknotes however didn't depict the number, making the 500,000,000,000 Yugoslav dinar banknote the world's leader when it comes to depicted zeros on banknotes.
The Z$100 billion agro cheque, issued in Zimbabwe on July 21, 2008, shares the record for depicted zeroes (11) with the 500 billion Yugoslav dinar banknote.
The Post-WWII hyperinflation of Hungary holds the record for the most extreme monthly inflation rate ever — 41,900,000,000,000,000% (4.19 × 1016%) for July, 1946, amounting to prices doubling every fifteen hours.
One way to avoid the use of large numbers is by declaring a new unit of currency (an example being, instead of 10,000,000,000 Dollars, a bank might set 1 new dollar = 1,000,000,000 old dollars, so the new note would read "10 new dollars".) An example of this would be Turkey's revaluation of the Lira on January 1, 2005, when the old Turkish lira (TRL) was converted to the New Turkish lira (YTL) at a rate of 1,000,000 old to 1 new Turkish Lira. While this does not lessen the actual value of a currency, it is called redenomination or revaluation and also happens over time in countries with standard inflation levels. During hyperinflation, currency inflation happens so quickly that bills reach large numbers before revaluation.
Some banknotes were stamped to indicate changes of denomination. This is because it would take too long to print new notes. By time the new notes would be printed, they would be obsolete (that is, they would be of too low a denomination to be useful).
Metallic coins were rapid casualties of hyperinflation, as the scrap value of metal enormously exceeded the face value. Massive amounts of coinage were melted down, usually illicitly, and exported for hard currency.
Governments will often try to disguise the true rate of inflation through a variety of techniques. These can include the following:
Outright lying in official statistics such as money supply, inflation or reserves.
Suppression of publication of money supply statistics, or inflation indices.
Price and wage controls.
Forced savings schemes, designed to suck up excess liquidity. These savings schemes may be described as pensions schemes, emergency funds, war funds, or something similar.
Adjusting the components of the Consumer price index, to remove those items whose prices are rising the fastest.
None of these actions address the root causes of inflation, and in fact, if discovered, tend to further undermine trust in the currency, causing further increases in inflation. Price controls will generally result in hoarding and extremely high demand for the controlled goods, resulting in shortages and disruptions of the supply chain. Products available to consumers may diminish or disappear as businesses no longer find it sufficiently profitable (or may be operating at a loss) to continue producing and/or distributing such goods, further exacerbating the problem.