56558231889 has 16 divisors (see below), whose sum is σ = 79871012928. Its totient is φ = 35476808192.

The previous prime is 56558231861. The next prime is 56558231909. The reversal of 56558231889 is 98813285565.

It is a cyclic number.

It is not a de Polignac number, because 56558231889 - 2²⁵ = 56524677457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56558232889) 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, 5029 + ... + 336365.

It is an arithmetic number, because the mean of its divisors is an integer number (4991938308).

Almost surely, 2^56558231889 is an apocalyptic number.

It is an amenable number.

56558231889 is a deficient number, since it is larger than the sum of its proper divisors (23312781039).

56558231889 is a wasteful number, since it uses less digits than its factorization.

56558231889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334704.

The product of its digits is 20736000, while the sum is 60.

The spelling of 56558231889 in words is "fifty-six billion, five hundred fifty-eight million, two hundred thirty-one thousand, eight hundred eighty-nine".