556536223621 has 16 divisors (see below), whose sum is σ = 642431795200. Its totient is φ = 472241356848.

The previous prime is 556536223601. The next prime is 556536223637. The reversal of 556536223621 is 126322635655.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556536223621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556536223601) 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, 2048860 + ... + 2304538.

It is an arithmetic number, because the mean of its divisors is an integer number (40151987200).

Almost surely, 2^556536223621 is an apocalyptic number.

It is an amenable number.

556536223621 is a deficient number, since it is larger than the sum of its proper divisors (85895571579).

556536223621 is a wasteful number, since it uses less digits than its factorization.

556536223621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258808.

The product of its digits is 1944000, while the sum is 46.

The spelling of 556536223621 in words is "five hundred fifty-six billion, five hundred thirty-six million, two hundred twenty-three thousand, six hundred twenty-one".