128108779058 has 16 divisors (see below), whose sum is σ = 212538059160. Its totient is φ = 57529097856.

The previous prime is 128108778997. The next prime is 128108779069. The reversal of 128108779058 is 850977801821.

It can be written as a sum of positive squares in 4 ways, for example, as 94490456449 + 33618322609 = 307393^2 + 183353^2 .

It is a junction number, because it is equal to n+sod(n) for n = 128108778994 and 128108779012.

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, 66583643 + ... + 66585566.

Almost surely, 2^128108779058 is an apocalyptic number.

128108779058 is a deficient number, since it is larger than the sum of its proper divisors (84429280102).

128108779058 is a wasteful number, since it uses less digits than its factorization.

128108779058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133169261.

The product of its (nonzero) digits is 2257920, while the sum is 56.

The spelling of 128108779058 in words is "one hundred twenty-eight billion, one hundred eight million, seven hundred seventy-nine thousand, fifty-eight".