56423730181 has 16 divisors (see below), whose sum is σ = 71138366208. Its totient is φ = 43554096000.

The previous prime is 56423730179. The next prime is 56423730191. The reversal of 56423730181 is 18103732465.

It is a cyclic number.

It is not a de Polignac number, because 56423730181 - 2¹ = 56423730179 is a prime.

It is a super-2 number, since 2×56423730181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56423730191) 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, 7557745 + ... + 7565206.

It is an arithmetic number, because the mean of its divisors is an integer number (4446147888).

Almost surely, 2^56423730181 is an apocalyptic number.

It is an amenable number.

56423730181 is a deficient number, since it is larger than the sum of its proper divisors (14714636027).

56423730181 is a wasteful number, since it uses less digits than its factorization.

56423730181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15123012.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 56423730181 in words is "fifty-six billion, four hundred twenty-three million, seven hundred thirty thousand, one hundred eighty-one".