556776677655 has 48 divisors (see below), whose sum is σ = 1081268551584. Its totient is φ = 262656311040.

The previous prime is 556776677623. The next prime is 556776677671.

It is a happy number.

556776677655 is a `hidden beast` number, since 5 + 567 + 7 + 6 + 6 + 7 + 7 + 6 + 55 = 666.

556776677655 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 556776677655 - 2⁵ = 556776677623 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15181704 + ... + 15218333.

It is an arithmetic number, because the mean of its divisors is an integer number (22526428158).

Almost surely, 2^556776677655 is an apocalyptic number.

556776677655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

556776677655 is a deficient number, since it is larger than the sum of its proper divisors (524491873929).

556776677655 is a wasteful number, since it uses less digits than its factorization.

556776677655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30400096 (or 30400093 counting only the distinct ones).

The product of its digits is 1944810000, while the sum is 72.

The spelling of 556776677655 in words is "five hundred fifty-six billion, seven hundred seventy-six million, six hundred seventy-seven thousand, six hundred fifty-five".