55785313976 has 16 divisors (see below), whose sum is σ = 119539958640. Its totient is φ = 23907991680.

The previous prime is 55785313949. The next prime is 55785313981. The reversal of 55785313976 is 67931358755.

55785313976 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55785313976² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 498083105 + ... + 498083216.

It is an arithmetic number, because the mean of its divisors is an integer number (7471247415).

Almost surely, 2^55785313976 is an apocalyptic number.

55785313976 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

55785313976 is an abundant number, since it is smaller than the sum of its proper divisors (63754644664).

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

55785313976 is a wasteful number, since it uses less digits than its factorization.

55785313976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996166334 (or 996166330 counting only the distinct ones).

The product of its digits is 23814000, while the sum is 59.

The spelling of 55785313976 in words is "fifty-five billion, seven hundred eighty-five million, three hundred thirteen thousand, nine hundred seventy-six".