56666164660525 has 96 divisors (see below), whose sum is σ = 85957675499520. Its totient is φ = 36190807776000.

The previous prime is 56666164660513. The next prime is 56666164660541. The reversal of 56666164660525 is 52506646166665.

It is not a de Polignac number, because 56666164660525 - 2⁵ = 56666164660493 is a prime.

It is a super-2 number, since 2×56666164660525² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 428097402 + ... + 428229748.

It is an arithmetic number, because the mean of its divisors is an integer number (895392453120).

Almost surely, 2^{56666164660525} is an apocalyptic number.

It is an amenable number.

56666164660525 is a deficient number, since it is larger than the sum of its proper divisors (29291510838995).

56666164660525 is a wasteful number, since it uses less digits than its factorization.

56666164660525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134555 (or 134550 counting only the distinct ones).

The product of its (nonzero) digits is 279936000, while the sum is 64.

The spelling of 56666164660525 in words is "fifty-six trillion, six hundred sixty-six billion, one hundred sixty-four million, six hundred sixty thousand, five hundred twenty-five".