56312056665 has 24 divisors (see below), whose sum is σ = 97782846408. Its totient is φ = 29979164160.

The previous prime is 56312056643. The next prime is 56312056681. The reversal of 56312056665 is 56665021365.

It can be written as a sum of positive squares in 4 ways, for example, as 496576656 + 55815480009 = 22284^2 + 236253^2 .

It is not a de Polignac number, because 56312056665 - 2¹⁶ = 56311991129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 56312056665.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1098256 + ... + 1148385.

It is an arithmetic number, because the mean of its divisors is an integer number (4074285267).

Almost surely, 2^56312056665 is an apocalyptic number.

It is an amenable number.

56312056665 is a deficient number, since it is larger than the sum of its proper divisors (41470789743).

56312056665 is a wasteful number, since it uses less digits than its factorization.

56312056665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2247209 (or 2247206 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 45.

The spelling of 56312056665 in words is "fifty-six billion, three hundred twelve million, fifty-six thousand, six hundred sixty-five".