56640715365 has 32 divisors (see below), whose sum is σ = 100234060416. Its totient is φ = 27131016960.

The previous prime is 56640715343. The next prime is 56640715387. The reversal of 56640715365 is 56351704665.

It is an interprime number because it is at equal distance from previous prime (56640715343) and next prime (56640715387).

It is not a de Polignac number, because 56640715365 - 2¹¹ = 56640713317 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3917991 + ... + 3932420.

It is an arithmetic number, because the mean of its divisors is an integer number (3132314388).

Almost surely, 2^56640715365 is an apocalyptic number.

It is an amenable number.

56640715365 is a deficient number, since it is larger than the sum of its proper divisors (43593345051).

56640715365 is a wasteful number, since it uses less digits than its factorization.

56640715365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7850469.

The product of its (nonzero) digits is 2268000, while the sum is 48.

The spelling of 56640715365 in words is "fifty-six billion, six hundred forty million, seven hundred fifteen thousand, three hundred sixty-five".