76814857938 has 48 divisors (see below), whose sum is σ = 192459214080. Its totient is φ = 20258862624.

The previous prime is 76814857793. The next prime is 76814857943. The reversal of 76814857938 is 83975841867.

It is a super-2 number, since 2×76814857938² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10045218 + ... + 10052861.

It is an arithmetic number, because the mean of its divisors is an integer number (4009566960).

Almost surely, 2^76814857938 is an apocalyptic number.

76814857938 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

76814857938 is an abundant number, since it is smaller than the sum of its proper divisors (115644356142).

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

76814857938 is a wasteful number, since it uses less digits than its factorization.

76814857938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20098111 (or 20098104 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 66.

The spelling of 76814857938 in words is "seventy-six billion, eight hundred fourteen million, eight hundred fifty-seven thousand, nine hundred thirty-eight".