- a cardinal number represented in the U.S. by 1 followed by 27 zeros, and in Great Britain by 1 followed by 48 zeros.
- amounting to one octillion in number.
- (in Britain and Germany) the number represented as one followed by 48 zeros (10 48)
- (in the US, Canada, and France) the number represented as one followed by 27 zeros (10 27)
