56715017138 has 32 divisors (see below), whose sum is σ = 96488884800. Its totient is φ = 24785510976.

The previous prime is 56715017129. The next prime is 56715017167. The reversal of 56715017138 is 83171051765.

It is a super-2 number, since 2×56715017138² (a number of 22 digits) contains 22 as substring.

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, 948620 + ... + 1006632.

It is an arithmetic number, because the mean of its divisors is an integer number (3015277650).

Almost surely, 2^56715017138 is an apocalyptic number.

56715017138 is a deficient number, since it is larger than the sum of its proper divisors (39773867662).

56715017138 is a wasteful number, since it uses less digits than its factorization.

56715017138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60026.

The product of its (nonzero) digits is 176400, while the sum is 44.

The spelling of 56715017138 in words is "fifty-six billion, seven hundred fifteen million, seventeen thousand, one hundred thirty-eight".