56566359336507 has 4 divisors (see below), whose sum is σ = 75421812448680. Its totient is φ = 37710906224336.

The previous prime is 56566359336349. The next prime is 56566359336521. The reversal of 56566359336507 is 70563395366565.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56566359336507 - 2³¹ = 56564211852859 is a prime.

It is a super-2 number, since 2×56566359336507² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56566359336547) 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, 9427726556082 + ... + 9427726556087.

It is an arithmetic number, because the mean of its divisors is an integer number (18855453112170).

Almost surely, 2^{56566359336507} is an apocalyptic number.

56566359336507 is a deficient number, since it is larger than the sum of its proper divisors (18855453112173).

56566359336507 is a wasteful number, since it uses less digits than its factorization.

56566359336507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18855453112172.

The product of its (nonzero) digits is 1377810000, while the sum is 69.

The spelling of 56566359336507 in words is "fifty-six trillion, five hundred sixty-six billion, three hundred fifty-nine million, three hundred thirty-six thousand, five hundred seven".