56365566516863 has 4 divisors (see below), whose sum is σ = 58816243321968. Its totient is φ = 53914889711760.

The previous prime is 56365566516839. The next prime is 56365566516871. The reversal of 56365566516863 is 36861566556365.

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 56365566516863 - 2¹⁸ = 56365566254719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56365566116863) 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, 1225338402518 + ... + 1225338402563.

It is an arithmetic number, because the mean of its divisors is an integer number (14704060830492).

Almost surely, 2^{56365566516863} is an apocalyptic number.

56365566516863 is a deficient number, since it is larger than the sum of its proper divisors (2450676805105).

56365566516863 is a wasteful number, since it uses less digits than its factorization.

56365566516863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2450676805104.

The product of its digits is 2099520000, while the sum is 71.

The spelling of 56365566516863 in words is "fifty-six trillion, three hundred sixty-five billion, five hundred sixty-six million, five hundred sixteen thousand, eight hundred sixty-three".