77056195686 has 16 divisors (see below), whose sum is σ = 154383246000. Its totient is φ = 25640256128.

The previous prime is 77056195663. The next prime is 77056195709. The reversal of 77056195686 is 68659165077.

It is an interprime number because it is at equal distance from previous prime (77056195663) and next prime (77056195709).

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

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, 11281911 + ... + 11288738.

It is an arithmetic number, because the mean of its divisors is an integer number (9648952875).

Almost surely, 2^77056195686 is an apocalyptic number.

77056195686 is an abundant number, since it is smaller than the sum of its proper divisors (77327050314).

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

77056195686 is a wasteful number, since it uses less digits than its factorization.

77056195686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22571223.

The product of its (nonzero) digits is 19051200, while the sum is 60.

The spelling of 77056195686 in words is "seventy-seven billion, fifty-six million, one hundred ninety-five thousand, six hundred eighty-six".