77696158077 has 24 divisors (see below), whose sum is σ = 112551177024. Its totient is φ = 51648395904.

The previous prime is 77696158037. The next prime is 77696158087. The reversal of 77696158077 is 77085169677.

77696158077 is a `hidden beast` number, since 7 + 7 + 6 + 9 + 615 + 8 + 0 + 7 + 7 = 666.

It is not a de Polignac number, because 77696158077 - 2⁶ = 77696158013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77696158037) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4704328 + ... + 4720814.

It is an arithmetic number, because the mean of its divisors is an integer number (4689632376).

Almost surely, 2^77696158077 is an apocalyptic number.

It is an amenable number.

77696158077 is a deficient number, since it is larger than the sum of its proper divisors (34855018947).

77696158077 is a wasteful number, since it uses less digits than its factorization.

77696158077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17969 (or 17966 counting only the distinct ones).

The product of its (nonzero) digits is 31116960, while the sum is 63.

The spelling of 77696158077 in words is "seventy-seven billion, six hundred ninety-six million, one hundred fifty-eight thousand, seventy-seven".