55871755717856 has 96 divisors (see below), whose sum is σ = 125262563602176. Its totient is φ = 24346464768000.

The previous prime is 55871755717837. The next prime is 55871755717861. The reversal of 55871755717856 is 65871755717855.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52306475 + ... + 53363946.

It is an arithmetic number, because the mean of its divisors is an integer number (1304818370856).

Almost surely, 2^{55871755717856} is an apocalyptic number.

It is an amenable number.

55871755717856 is an abundant number, since it is smaller than the sum of its proper divisors (69390807884320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55871755717856 is a wasteful number, since it uses less digits than its factorization.

55871755717856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105670516 (or 105670508 counting only the distinct ones).

The product of its digits is 2881200000, while the sum is 77.

Subtracting 55871755717856 from its reverse (65871755717855), we obtain a palindrome (9999999999999).

The spelling of 55871755717856 in words is "fifty-five trillion, eight hundred seventy-one billion, seven hundred fifty-five million, seven hundred seventeen thousand, eight hundred fifty-six".