76931233686 has 24 divisors (see below), whose sum is σ = 167521957200. Its totient is φ = 25514880336.

The previous prime is 76931233649. The next prime is 76931233699. The reversal of 76931233686 is 68633213967.

76931233686 is a `hidden beast` number, since 76 + 93 + 123 + 368 + 6 = 666.

It is a super-2 number, since 2×76931233686² (a number of 23 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 11 ways as a sum of consecutive naturals, for example, 10735005 + ... + 10742168.

It is an arithmetic number, because the mean of its divisors is an integer number (6980081550).

Almost surely, 2^76931233686 is an apocalyptic number.

76931233686 is an abundant number, since it is smaller than the sum of its proper divisors (90590723514).

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

76931233686 is a wasteful number, since it uses less digits than its factorization.

76931233686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21477380 (or 21477377 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 54.

The spelling of 76931233686 in words is "seventy-six billion, nine hundred thirty-one million, two hundred thirty-three thousand, six hundred eighty-six".