556984155081 has 32 divisors (see below), whose sum is σ = 764529891840. Its totient is φ = 360429225984.

The previous prime is 556984155067. The next prime is 556984155083. The reversal of 556984155081 is 180551489655.

It is not a de Polignac number, because 556984155081 - 2⁷ = 556984154953 is a prime.

It is a super-2 number, since 2×556984155081² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (556984155083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178576240 + ... + 178579358.

It is an arithmetic number, because the mean of its divisors is an integer number (23891559120).

Almost surely, 2^556984155081 is an apocalyptic number.

It is an amenable number.

556984155081 is a deficient number, since it is larger than the sum of its proper divisors (207545736759).

556984155081 is a wasteful number, since it uses less digits than its factorization.

556984155081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6465.

The product of its (nonzero) digits is 8640000, while the sum is 57.

The spelling of 556984155081 in words is "five hundred fifty-six billion, nine hundred eighty-four million, one hundred fifty-five thousand, eighty-one".