56566657157 has 8 divisors (see below), whose sum is σ = 59917632192. Its totient is φ = 53218296000.

The previous prime is 56566657109. The next prime is 56566657163. The reversal of 56566657157 is 75175666565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56566657157 - 2⁶ = 56566657093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56566657096 and 56566657105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56566657057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 608819 + ... + 695552.

It is an arithmetic number, because the mean of its divisors is an integer number (7489704024).

Almost surely, 2^56566657157 is an apocalyptic number.

It is an amenable number.

56566657157 is a deficient number, since it is larger than the sum of its proper divisors (3350975035).

56566657157 is a wasteful number, since it uses less digits than its factorization.

56566657157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306939.

The product of its digits is 39690000, while the sum is 59.

The spelling of 56566657157 in words is "fifty-six billion, five hundred sixty-six million, six hundred fifty-seven thousand, one hundred fifty-seven".