78872158516 has 24 divisors (see below), whose sum is σ = 142807119840. Its totient is φ = 38070530400.

The previous prime is 78872158481. The next prime is 78872158553. The reversal of 78872158516 is 61585127887.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 789331 + ... + 883621.

It is an arithmetic number, because the mean of its divisors is an integer number (5950296660).

Almost surely, 2^78872158516 is an apocalyptic number.

It is an amenable number.

78872158516 is a deficient number, since it is larger than the sum of its proper divisors (63934961324).

78872158516 is a wasteful number, since it uses less digits than its factorization.

78872158516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101535 (or 101533 counting only the distinct ones).

The product of its digits is 7526400, while the sum is 58.

The spelling of 78872158516 in words is "seventy-eight billion, eight hundred seventy-two million, one hundred fifty-eight thousand, five hundred sixteen".