556118811655 has 32 divisors (see below), whose sum is σ = 769823502336. Its totient is φ = 381856800000.

The previous prime is 556118811653. The next prime is 556118811673.

556118811655 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 556118811655 - 2¹ = 556118811653 is a prime.

It is a super-4 number, since 4×556118811655⁴ (a number of 48 digits) contains 4444 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 (556118811653) 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 31 ways as a sum of consecutive naturals, for example, 3907771 + ... + 4047580.

It is an arithmetic number, because the mean of its divisors is an integer number (24056984448).

Almost surely, 2^556118811655 is an apocalyptic number.

556118811655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

556118811655 is a deficient number, since it is larger than the sum of its proper divisors (213704690681).

556118811655 is a wasteful number, since it uses less digits than its factorization.

556118811655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7955439.

The product of its digits is 1440000, while the sum is 52.

The spelling of 556118811655 in words is "five hundred fifty-six billion, one hundred eighteen million, eight hundred eleven thousand, six hundred fifty-five".