977507581113 has 72 divisors (see below), whose sum is σ = 1703768601600. Its totient is φ = 528957796608.

The previous prime is 977507581111. The next prime is 977507581123. The reversal of 977507581113 is 311185705779.

977507581113 is a `hidden beast` number, since 9 + 7 + 7 + 50 + 7 + 581 + 1 + 1 + 3 = 666.

It is not a de Polignac number, because 977507581113 - 2¹ = 977507581111 is a prime.

It is a super-2 number, since 2×977507581113² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 977507581113.

It is not an unprimeable number, because it can be changed into a prime (977507581111) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 65469633 + ... + 65484561.

It is an arithmetic number, because the mean of its divisors is an integer number (23663452800).

Almost surely, 2^977507581113 is an apocalyptic number.

It is an amenable number.

977507581113 is a deficient number, since it is larger than the sum of its proper divisors (726261020487).

977507581113 is a wasteful number, since it uses less digits than its factorization.

977507581113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17859 (or 17837 counting only the distinct ones).

The product of its (nonzero) digits is 1852200, while the sum is 54.

The spelling of 977507581113 in words is "nine hundred seventy-seven billion, five hundred seven million, five hundred eighty-one thousand, one hundred thirteen".