Million, Billion, Trillion, Quadrillion, Quintillion


The Short and Long Scale names for various multi-million numbers are shown in the chart below.

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The constant SI scale name is also shown. This is from the International System of Units (SI) in the International Bureau of Weights and Measures.


Raw Number SI Scale Short Scale Long Scale
1,000,000 M mega Million Million
1,000,000,000 G giga Billion Milliard
1,000,000,000,000 T tera Trillion Billion
1,000,000,000,000,000 P peta Quadrillion Billiard
1,000,000,000,000,000,000 E exa Quintillion Trillion
1,000,000,000,000,000,000,000 Z zetta Sextillion Trilliard
1,000,000,000,000,000,000,000,000 Y yotta Septillion Quadrillion

Is it time to change the names to the SI scale, using the Greek terms?

1,000,000,000 could be a Gigallion

1,000,000,000,000 could be a Terallion

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