77655255677 has 16 divisors (see below), whose sum is σ = 78489734400. Its totient is φ = 76826181120.

The previous prime is 77655255653. The next prime is 77655255683.

77655255677 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 77655255677 - 2²⁴ = 77638478461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77655255637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37315277 + ... + 37317357.

It is an arithmetic number, because the mean of its divisors is an integer number (4905608400).

Almost surely, 2^77655255677 is an apocalyptic number.

It is an amenable number.

77655255677 is a deficient number, since it is larger than the sum of its proper divisors (834478723).

77655255677 is a wasteful number, since it uses less digits than its factorization.

77655255677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3196.

The product of its digits is 108045000, while the sum is 62.

The spelling of 77655255677 in words is "seventy-seven billion, six hundred fifty-five million, two hundred fifty-five thousand, six hundred seventy-seven".