56573662243 has 4 divisors (see below), whose sum is σ = 64655614000. Its totient is φ = 48491710488.

The previous prime is 56573662213. The next prime is 56573662247. The reversal of 56573662243 is 34226637565.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56573662243 - 2⁹ = 56573661731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56573662247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4040975868 + ... + 4040975881.

It is an arithmetic number, because the mean of its divisors is an integer number (16163903500).

Almost surely, 2^56573662243 is an apocalyptic number.

56573662243 is a deficient number, since it is larger than the sum of its proper divisors (8081951757).

56573662243 is an equidigital number, since it uses as much as digits as its factorization.

56573662243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8081951756.

The product of its digits is 5443200, while the sum is 49.

The spelling of 56573662243 in words is "fifty-six billion, five hundred seventy-three million, six hundred sixty-two thousand, two hundred forty-three".