556645546655 has 16 divisors (see below), whose sum is σ = 730382565024. Its totient is φ = 403898158080.

The previous prime is 556645546649. The next prime is 556645546657.

It is a happy number.

556645546655 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 556645546655 - 2³⁰ = 555571804831 is a prime.

It is a super-2 number, since 2×556645546655² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556645546657) 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, 11663054 + ... + 11710683.

It is an arithmetic number, because the mean of its divisors is an integer number (45648910314).

Almost surely, 2^556645546655 is an apocalyptic number.

556645546655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

556645546655 is a deficient number, since it is larger than the sum of its proper divisors (173737018369).

556645546655 is a wasteful number, since it uses less digits than its factorization.

556645546655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23374186.

The product of its digits is 324000000, while the sum is 62.

The spelling of 556645546655 in words is "five hundred fifty-six billion, six hundred forty-five million, five hundred forty-six thousand, six hundred fifty-five".