56565166156504 has 8 divisors (see below), whose sum is σ = 106059686543460. Its totient is φ = 28282583078248.

The previous prime is 56565166156483. The next prime is 56565166156507. The reversal of 56565166156504 is 40565166156565.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56565166156507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3535322884774 + ... + 3535322884789.

Almost surely, 2^{56565166156504} is an apocalyptic number.

It is an amenable number.

56565166156504 is a deficient number, since it is larger than the sum of its proper divisors (49494520386956).

56565166156504 is a wasteful number, since it uses less digits than its factorization.

56565166156504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7070645769569 (or 7070645769565 counting only the distinct ones).

The product of its (nonzero) digits is 97200000, while the sum is 61.

Adding to 56565166156504 its sum of digits (61), we get a palindrome (56565166156565).

The spelling of 56565166156504 in words is "fifty-six trillion, five hundred sixty-five billion, one hundred sixty-six million, one hundred fifty-six thousand, five hundred four".