76731381168 has 40 divisors (see below), whose sum is σ = 213470639088. Its totient is φ = 23609655552.

The previous prime is 76731381149. The next prime is 76731381173. The reversal of 76731381168 is 86118313767.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 76731381168.

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, 61482855 + ... + 61484102.

Almost surely, 2^76731381168 is an apocalyptic number.

76731381168 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

76731381168 is an abundant number, since it is smaller than the sum of its proper divisors (136739257920).

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

76731381168 is a wasteful number, since it uses less digits than its factorization.

76731381168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122966981 (or 122966975 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 51.

The spelling of 76731381168 in words is "seventy-six billion, seven hundred thirty-one million, three hundred eighty-one thousand, one hundred sixty-eight".