556672555581 has 16 divisors (see below), whose sum is σ = 744380673600. Its totient is φ = 370040444928.

The previous prime is 556672555529. The next prime is 556672555591. The reversal of 556672555581 is 185555276655.

It is not a de Polignac number, because 556672555581 - 2³³ = 548082620989 is a prime.

It is a super-2 number, since 2×556672555581² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556672555591) 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, 3115690 + ... + 3289508.

It is an arithmetic number, because the mean of its divisors is an integer number (46523792100).

Almost surely, 2^556672555581 is an apocalyptic number.

It is an amenable number.

556672555581 is a deficient number, since it is larger than the sum of its proper divisors (187708118019).

556672555581 is a wasteful number, since it uses less digits than its factorization.

556672555581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176908.

The product of its digits is 63000000, while the sum is 60.

The spelling of 556672555581 in words is "five hundred fifty-six billion, six hundred seventy-two million, five hundred fifty-five thousand, five hundred eighty-one".