128496185776 has 40 divisors (see below), whose sum is σ = 284895542304. Its totient is φ = 54998515200.

The previous prime is 128496185759. The next prime is 128496185777. The reversal of 128496185776 is 677581694821.

It is a super-2 number, since 2×128496185776² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128496185777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 655525 + ... + 828676.

Almost surely, 2^128496185776 is an apocalyptic number.

128496185776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

128496185776 is an abundant number, since it is smaller than the sum of its proper divisors (156399356528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128496185776 is a wasteful number, since it uses less digits than its factorization.

128496185776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484989 (or 1484983 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 64.

The spelling of 128496185776 in words is "one hundred twenty-eight billion, four hundred ninety-six million, one hundred eighty-five thousand, seven hundred seventy-six".