(US, modern Britain and Australia, short scale) A thousand trillion trillion, a billion billion billion: 1 followed by 27 zeros, 10²⁷.

plural of octillion

The ordinal form of the number octillion.

The person or thing in the octillionth position. / One of an octillion equal parts of a whole.

By a multiple of one octillion; by an octillion times as much or as many.

By a factor of one octillion.

plural of octillionth