56831744656 has 10 divisors (see below), whose sum is σ = 110111505302. Its totient is φ = 28415872320.

The previous prime is 56831744647. The next prime is 56831744659. The reversal of 56831744656 is 65644713865.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 49157984656 + 7673760000 = 221716^2 + 87600^2 .

It is a junction number, because it is equal to n+sod(n) for n = 56831744597 and 56831744606.

It is not an unprimeable number, because it can be changed into a prime (56831744659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1775992005 + ... + 1775992036.

Almost surely, 2^56831744656 is an apocalyptic number.

It is an amenable number.

56831744656 is a deficient number, since it is larger than the sum of its proper divisors (53279760646).

56831744656 is a wasteful number, since it uses less digits than its factorization.

56831744656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3551984049 (or 3551984043 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 55.

The spelling of 56831744656 in words is "fifty-six billion, eight hundred thirty-one million, seven hundred forty-four thousand, six hundred fifty-six".