128635983752 has 32 divisors (see below), whose sum is σ = 244846977120. Its totient is φ = 63343885440.

The previous prime is 128635983737. The next prime is 128635983761. The reversal of 128635983752 is 257389536821.

It is a junction number, because it is equal to n+sod(n) for n = 128635983691 and 128635983700.

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, 2621927 + ... + 2670537.

It is an arithmetic number, because the mean of its divisors is an integer number (7651468035).

Almost surely, 2^128635983752 is an apocalyptic number.

It is an amenable number.

128635983752 is a deficient number, since it is larger than the sum of its proper divisors (116210993368).

128635983752 is a wasteful number, since it uses less digits than its factorization.

128635983752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53621 (or 53617 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 59.

The spelling of 128635983752 in words is "one hundred twenty-eight billion, six hundred thirty-five million, nine hundred eighty-three thousand, seven hundred fifty-two".