Either of the following two numbers (see Names for large numbers for more information):
- 1,000,000,000,000 (one million million; ; SI prefix:
tera-) – for all short scale countries – now used in most English language countries.
- 1,000,000,000,000,000,000 (one million million million; ; SI prefix:
exa-) – for all long scale countries – not used much in English language countries but often used in many other languages.