556636636655 has 16 divisors (see below), whose sum is σ = 735136534944. Its totient is φ = 401244103680.

The previous prime is 556636636637. The next prime is 556636636657.

556636636655 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 556636636655 - 2³² = 552341669359 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 (556636636657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44775494 + ... + 44787923.

It is an arithmetic number, because the mean of its divisors is an integer number (45946033434).

Almost surely, 2^556636636655 is an apocalyptic number.

556636636655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

556636636655 is a deficient number, since it is larger than the sum of its proper divisors (178499898289).

556636636655 is a wasteful number, since it uses less digits than its factorization.

556636636655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89563546.

The product of its digits is 262440000, while the sum is 62.

The spelling of 556636636655 in words is "five hundred fifty-six billion, six hundred thirty-six million, six hundred thirty-six thousand, six hundred fifty-five".