77261696164 has 12 divisors (see below), whose sum is σ = 135289283584. Its totient is φ = 38607615144.

The previous prime is 77261696143. The next prime is 77261696173. The reversal of 77261696164 is 46169616277.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5800752 + ... + 5814055.

Almost surely, 2^77261696164 is an apocalyptic number.

It is an amenable number.

77261696164 is a deficient number, since it is larger than the sum of its proper divisors (58027587420).

77261696164 is a wasteful number, since it uses less digits than its factorization.

77261696164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11616474 (or 11616472 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 55.

The spelling of 77261696164 in words is "seventy-seven billion, two hundred sixty-one million, six hundred ninety-six thousand, one hundred sixty-four".