77988983838164 has 48 divisors (see below), whose sum is σ = 162780935116800. Its totient is φ = 31966452134496.

The previous prime is 77988983838163. The next prime is 77988983838193. The reversal of 77988983838164 is 46183838988977.

77988983838164 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 77988983838164.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77988983838163) 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, 3006974 + ... + 12846005.

It is an arithmetic number, because the mean of its divisors is an integer number (3391269481600).

Almost surely, 2^{77988983838164} is an apocalyptic number.

It is an amenable number.

77988983838164 is an abundant number, since it is smaller than the sum of its proper divisors (84791951278636).

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

77988983838164 is a wasteful number, since it uses less digits than its factorization.

77988983838164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15860652 (or 15860650 counting only the distinct ones).

The product of its digits is 28092137472, while the sum is 89.

The spelling of 77988983838164 in words is "seventy-seven trillion, nine hundred eighty-eight billion, nine hundred eighty-three million, eight hundred thirty-eight thousand, one hundred sixty-four".