56356477994839 has 16 divisors (see below), whose sum is σ = 65187949294080. Its totient is φ = 48182397255360.

The previous prime is 56356477994821. The next prime is 56356477994867. The reversal of 56356477994839 is 93849977465365.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56356477994839 is a prime.

It is a super-2 number, since 2×56356477994839² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56356477994809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 984088959 + ... + 984146224.

It is an arithmetic number, because the mean of its divisors is an integer number (4074246830880).

Almost surely, 2^{56356477994839} is an apocalyptic number.

56356477994839 is a deficient number, since it is larger than the sum of its proper divisors (8831471299241).

56356477994839 is a wasteful number, since it uses less digits than its factorization.

56356477994839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968235350.

The product of its digits is 37035532800, while the sum is 85.

The spelling of 56356477994839 in words is "fifty-six trillion, three hundred fifty-six billion, four hundred seventy-seven million, nine hundred ninety-four thousand, eight hundred thirty-nine".