86971813124 has 24 divisors (see below), whose sum is σ = 173981398080. Its totient is φ = 37265540256.

The previous prime is 86971813111. The next prime is 86971813139. The reversal of 86971813124 is 42131817968.

It is a happy 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, 205094 + ... + 464765.

It is an arithmetic number, because the mean of its divisors is an integer number (7249224920).

Almost surely, 2^86971813124 is an apocalyptic number.

It is an amenable number.

86971813124 is an abundant number, since it is smaller than the sum of its proper divisors (87009584956).

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

86971813124 is a wasteful number, since it uses less digits than its factorization.

86971813124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674507 (or 674505 counting only the distinct ones).

The product of its digits is 580608, while the sum is 50.

The spelling of 86971813124 in words is "eighty-six billion, nine hundred seventy-one million, eight hundred thirteen thousand, one hundred twenty-four".