128507408376 has 32 divisors (see below), whose sum is σ = 332346747600. Its totient is φ = 41358705920.

The previous prime is 128507408357. The next prime is 128507408453. The reversal of 128507408376 is 673804705821.

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, 92317845 + ... + 92319236.

Almost surely, 2^128507408376 is an apocalyptic number.

It is an amenable number.

128507408376 is an abundant number, since it is smaller than the sum of its proper divisors (203839339224).

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

128507408376 is a wasteful number, since it uses less digits than its factorization.

128507408376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184637119 (or 184637115 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 51.

The spelling of 128507408376 in words is "one hundred twenty-eight billion, five hundred seven million, four hundred eight thousand, three hundred seventy-six".