noun, plural sex·de·cil·lions, (as after a numeral) sex·de·cil·lion.
a cardinal number represented in the U.S. by 1 followed by 51 zeros, and in Great Britain by 1 followed by 96 zeros.
amounting to one sexdecillion in number.
Origin of sexdecillion
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019