56640335751 has 16 divisors (see below), whose sum is σ = 84287902720. Its totient is φ = 37590891480.

The previous prime is 56640335743. The next prime is 56640335753. The reversal of 56640335751 is 15753304665.

56640335751 is a `hidden beast` number, since 5 + 6 + 6 + 40 + 33 + 575 + 1 = 666.

56640335751 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56640335751 - 2³ = 56640335743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56640335697 and 56640335706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56640335753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4697545 + ... + 4709586.

It is an arithmetic number, because the mean of its divisors is an integer number (5267993920).

Almost surely, 2^56640335751 is an apocalyptic number.

56640335751 is a deficient number, since it is larger than the sum of its proper divisors (27647566969).

56640335751 is a wasteful number, since it uses less digits than its factorization.

56640335751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9407363 (or 9407357 counting only the distinct ones).

The product of its (nonzero) digits is 1134000, while the sum is 45.

The spelling of 56640335751 in words is "fifty-six billion, six hundred forty million, three hundred thirty-five thousand, seven hundred fifty-one".