56558122128 has 80 divisors (see below), whose sum is σ = 164016516160. Its totient is φ = 18658335744.

The previous prime is 56558122109. The next prime is 56558122133. The reversal of 56558122128 is 82122185565.

56558122128 is a `hidden beast` number, since 5 + 65 + 581 + 2 + 2 + 1 + 2 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 632950 + ... + 716757.

It is an arithmetic number, because the mean of its divisors is an integer number (2050206452).

Almost surely, 2^56558122128 is an apocalyptic number.

It is an amenable number.

56558122128 is an abundant number, since it is smaller than the sum of its proper divisors (107458394032).

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

56558122128 is a wasteful number, since it uses less digits than its factorization.

56558122128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349821 (or 1349809 counting only the distinct ones).

The product of its digits is 384000, while the sum is 45.

The spelling of 56558122128 in words is "fifty-six billion, five hundred fifty-eight million, one hundred twenty-two thousand, one hundred twenty-eight".