56518635871522 has 32 divisors (see below), whose sum is σ = 96909920778240. Its totient is φ = 24470502653520.

The previous prime is 56518635871493. The next prime is 56518635871543. The reversal of 56518635871522 is 22517853681565.

It is a happy number.

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, 233554608 + ... + 233796475.

It is an arithmetic number, because the mean of its divisors is an integer number (3028435024320).

Almost surely, 2^{56518635871522} is an apocalyptic number.

56518635871522 is a deficient number, since it is larger than the sum of its proper divisors (40391284906718).

56518635871522 is a wasteful number, since it uses less digits than its factorization.

56518635871522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467351358.

The product of its digits is 120960000, while the sum is 64.

The spelling of 56518635871522 in words is "fifty-six trillion, five hundred eighteen billion, six hundred thirty-five million, eight hundred seventy-one thousand, five hundred twenty-two".