128913878904 has 32 divisors (see below), whose sum is σ = 322294522320. Its totient is φ = 42969982976.

The previous prime is 128913878881. The next prime is 128913878953. The reversal of 128913878904 is 409878319821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1029862 + ... + 1148234.

Almost surely, 2^128913878904 is an apocalyptic number.

It is an amenable number.

128913878904 is an abundant number, since it is smaller than the sum of its proper divisors (193380643416).

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

128913878904 is a wasteful number, since it uses less digits than its factorization.

128913878904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163759 (or 163755 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 60.

The spelling of 128913878904 in words is "one hundred twenty-eight billion, nine hundred thirteen million, eight hundred seventy-eight thousand, nine hundred four".