77940234756 has 36 divisors (see below), whose sum is σ = 197026033932. Its totient is φ = 25978701504.

The previous prime is 77940234731. The next prime is 77940234809. The reversal of 77940234756 is 65743204977.

It can be written as a sum of positive squares in 2 ways, for example, as 47538825156 + 30401409600 = 218034^2 + 174360^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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, 811810 + ... + 902726.

It is an arithmetic number, because the mean of its divisors is an integer number (5472945387).

Almost surely, 2^77940234756 is an apocalyptic number.

It is an amenable number.

77940234756 is an abundant number, since it is smaller than the sum of its proper divisors (119085799176).

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

77940234756 is a wasteful number, since it uses less digits than its factorization.

77940234756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114740 (or 114735 counting only the distinct ones).

The product of its (nonzero) digits is 8890560, while the sum is 54.

The spelling of 77940234756 in words is "seventy-seven billion, nine hundred forty million, two hundred thirty-four thousand, seven hundred fifty-six".