56979949965 has 32 divisors (see below), whose sum is σ = 95982606720. Its totient is φ = 28784957184.

The previous prime is 56979949963. The next prime is 56979949987. The reversal of 56979949965 is 56994997965.

It is not a de Polignac number, because 56979949965 - 2¹ = 56979949963 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56979949963) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2129047 + ... + 2155643.

It is an arithmetic number, because the mean of its divisors is an integer number (2999456460).

Almost surely, 2^56979949965 is an apocalyptic number.

It is an amenable number.

56979949965 is a deficient number, since it is larger than the sum of its proper divisors (39002656755).

56979949965 is a wasteful number, since it uses less digits than its factorization.

56979949965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34141.

The product of its digits is 1488034800, while the sum is 78.

The spelling of 56979949965 in words is "fifty-six billion, nine hundred seventy-nine million, nine hundred forty-nine thousand, nine hundred sixty-five".