Which preposition to use with sextillions

of Occurrences 2%

The invention of the alphabet, which, in a small number of elementary characters, is capable of six hundred and twenty sextillions of combinations, and of exhibiting to the sight the countless conceptions of the mind which have no corporeal forms, is so wonderful that great men of all ages have shrunk from accounting for it otherwise than as a boon of divine origin.

Which preposition to use with  sextillions