56917488471965 has 16 divisors (see below), whose sum is σ = 74512428149376. Its totient is φ = 41393280724800.

The previous prime is 56917488471959. The next prime is 56917488471983.

56917488471965 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56917488471965 - 2²⁰ = 56917487423389 is a prime.

It is a super-2 number, since 2×56917488471965² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56917488471965.

It is a congruent 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, 13873766 + ... + 17501895.

It is an arithmetic number, because the mean of its divisors is an integer number (4657026759336).

Almost surely, 2^{56917488471965} is an apocalyptic number.

56917488471965 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56917488471965 is a deficient number, since it is larger than the sum of its proper divisors (17594939677411).

56917488471965 is a wasteful number, since it uses less digits than its factorization.

56917488471965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31408660.

The product of its digits is 3657830400, while the sum is 80.

The spelling of 56917488471965 in words is "fifty-six trillion, nine hundred seventeen billion, four hundred eighty-eight million, four hundred seventy-one thousand, nine hundred sixty-five".