56856651456 has 56 divisors (see below), whose sum is σ = 164108977344. Its totient is φ = 17229287680.

The previous prime is 56856651431. The next prime is 56856651529. The reversal of 56856651456 is 65415665865.

It is a junction number, because it is equal to n+sod(n) for n = 56856651396 and 56856651405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13458270 + ... + 13462493.

Almost surely, 2^56856651456 is an apocalyptic number.

It is an amenable number.

56856651456 is an abundant number, since it is smaller than the sum of its proper divisors (107252325888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56856651456 is a wasteful number, since it uses less digits than its factorization.

56856651456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26920789 (or 26920779 counting only the distinct ones).

The product of its digits is 25920000, while the sum is 57.

The spelling of 56856651456 in words is "fifty-six billion, eight hundred fifty-six million, six hundred fifty-one thousand, four hundred fifty-six".