56117783331 has 6 divisors (see below), whose sum is σ = 81059020380. Its totient is φ = 37411855548.

The previous prime is 56117783327. The next prime is 56117783363. The reversal of 56117783331 is 13338771165.

56117783331 is a `hidden beast` number, since 561 + 1 + 7 + 7 + 83 + 3 + 3 + 1 = 666.

It is not a de Polignac number, because 56117783331 - 2² = 56117783327 is a prime.

It is a super-2 number, since 2×56117783331² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56117783531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3117654621 + ... + 3117654638.

It is an arithmetic number, because the mean of its divisors is an integer number (13509836730).

Almost surely, 2^56117783331 is an apocalyptic number.

56117783331 is a deficient number, since it is larger than the sum of its proper divisors (24941237049).

56117783331 is a wasteful number, since it uses less digits than its factorization.

56117783331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6235309265 (or 6235309262 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The spelling of 56117783331 in words is "fifty-six billion, one hundred seventeen million, seven hundred eighty-three thousand, three hundred thirty-one".