556172838893 has 16 divisors (see below), whose sum is σ = 641627650944. Its totient is φ = 472219264320.

The previous prime is 556172838829. The next prime is 556172838929. The reversal of 556172838893 is 398838271655.

It is a cyclic number.

It is not a de Polignac number, because 556172838893 - 2⁶ = 556172838829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556172837893) 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, 9573971 + ... + 9631887.

It is an arithmetic number, because the mean of its divisors is an integer number (40101728184).

Almost surely, 2^556172838893 is an apocalyptic number.

It is an amenable number.

556172838893 is a deficient number, since it is larger than the sum of its proper divisors (85454812051).

556172838893 is a wasteful number, since it uses less digits than its factorization.

556172838893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70852.

The product of its digits is 87091200, while the sum is 65.

The spelling of 556172838893 in words is "five hundred fifty-six billion, one hundred seventy-two million, eight hundred thirty-eight thousand, eight hundred ninety-three".