128569918404 has 24 divisors (see below), whose sum is σ = 300183202368. Its totient is φ = 42829964320.

The previous prime is 128569918397. The next prime is 128569918423. The reversal of 128569918404 is 404819965821.

It is a super-2 number, since 2×128569918404² (a number of 23 digits) contains 22 as substring.

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, 3314307 + ... + 3352874.

It is an arithmetic number, because the mean of its divisors is an integer number (12507633432).

Almost surely, 2^128569918404 is an apocalyptic number.

It is an amenable number.

128569918404 is an abundant number, since it is smaller than the sum of its proper divisors (171613283964).

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

128569918404 is a wasteful number, since it uses less digits than its factorization.

128569918404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6668795 (or 6668793 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 57.

The spelling of 128569918404 in words is "one hundred twenty-eight billion, five hundred sixty-nine million, nine hundred eighteen thousand, four hundred four".