76997775990 has 32 divisors (see below), whose sum is σ = 184819219200. Its totient is φ = 20530011744.

The previous prime is 76997775983. The next prime is 76997776019. The reversal of 76997775990 is 9957779967.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64287 + ... + 397653.

It is an arithmetic number, because the mean of its divisors is an integer number (5775600600).

Almost surely, 2^76997775990 is an apocalyptic number.

76997775990 is an abundant number, since it is smaller than the sum of its proper divisors (107821443210).

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

76997775990 is a wasteful number, since it uses less digits than its factorization.

76997775990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341076.

The product of its (nonzero) digits is 472588830, while the sum is 75.

The spelling of 76997775990 in words is "seventy-six billion, nine hundred ninety-seven million, seven hundred seventy-five thousand, nine hundred ninety".