56720556016 has 20 divisors (see below), whose sum is σ = 110554142832. Its totient is φ = 28190454656.

The previous prime is 56720556007. The next prime is 56720556017. The reversal of 56720556016 is 61065502765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56720556017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10611205 + ... + 10616548.

Almost surely, 2^56720556016 is an apocalyptic number.

It is an amenable number.

56720556016 is a deficient number, since it is larger than the sum of its proper divisors (53833586816).

56720556016 is a wasteful number, since it uses less digits than its factorization.

56720556016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21227928 (or 21227922 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 43.

The spelling of 56720556016 in words is "fifty-six billion, seven hundred twenty million, five hundred fifty-six thousand, sixteen".