128640914076 has 48 divisors (see below), whose sum is σ = 300709246208. Its totient is φ = 42802214400.

The previous prime is 128640914069. The next prime is 128640914089. The reversal of 128640914076 is 670419046821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24356556 + ... + 24361836.

Almost surely, 2^128640914076 is an apocalyptic number.

It is an amenable number.

128640914076 is an abundant number, since it is smaller than the sum of its proper divisors (172068332132).

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

128640914076 is a wasteful number, since it uses less digits than its factorization.

128640914076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8602 (or 8600 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 128640914076 in words is "one hundred twenty-eight billion, six hundred forty million, nine hundred fourteen thousand, seventy-six".