56640725468 has 12 divisors (see below), whose sum is σ = 100083612720. Its totient is φ = 28045407552.

The previous prime is 56640725461. The next prime is 56640725527. The reversal of 56640725468 is 86452704665.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56640725461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68738333 + ... + 68739156.

It is an arithmetic number, because the mean of its divisors is an integer number (8340301060).

Almost surely, 2^56640725468 is an apocalyptic number.

It is an amenable number.

56640725468 is a deficient number, since it is larger than the sum of its proper divisors (43442887252).

56640725468 is a wasteful number, since it uses less digits than its factorization.

56640725468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137477596 (or 137477594 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 53.

The spelling of 56640725468 in words is "fifty-six billion, six hundred forty million, seven hundred twenty-five thousand, four hundred sixty-eight".