56656651561155 has 32 divisors (see below), whose sum is σ = 100728663552000. Its totient is φ = 30215162599776.

The previous prime is 56656651561141. The next prime is 56656651561157. The reversal of 56656651561155 is 55116515665665.

56656651561155 is a `hidden beast` number, since 5 + 6 + 6 + 5 + 6 + 6 + 5 + 1 + 5 + 611 + 5 + 5 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-56656651561155 is a prime.

It is a super-2 number, since 2×56656651561155² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56656651561092 and 56656651561101.

It is not an unprimeable number, because it can be changed into a prime (56656651561157) 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, 9547509 + ... + 14299238.

It is an arithmetic number, because the mean of its divisors is an integer number (3147770736000).

Almost surely, 2^{56656651561155} is an apocalyptic number.

56656651561155 is a deficient number, since it is larger than the sum of its proper divisors (44072011990845).

56656651561155 is a wasteful number, since it uses less digits than its factorization.

56656651561155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23864360 (or 23864354 counting only the distinct ones).

The product of its digits is 121500000, while the sum is 63.

The spelling of 56656651561155 in words is "fifty-six trillion, six hundred fifty-six billion, six hundred fifty-one million, five hundred sixty-one thousand, one hundred fifty-five".