23420504557 has 8 divisors (see below), whose sum is σ = 24482032640. Its totient is φ = 22378103280.

The previous prime is 23420504521. The next prime is 23420504567. The reversal of 23420504557 is 75540502432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23420504557 - 2²³ = 23412115949 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 (23420504567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4779198 + ... + 4784095.

It is an arithmetic number, because the mean of its divisors is an integer number (3060254080).

Almost surely, 2^23420504557 is an apocalyptic number.

It is an amenable number.

23420504557 is a deficient number, since it is larger than the sum of its proper divisors (1061528083).

23420504557 is an equidigital number, since it uses as much as digits as its factorization.

23420504557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9563403.

The product of its (nonzero) digits is 168000, while the sum is 37.

The spelling of 23420504557 in words is "twenty-three billion, four hundred twenty million, five hundred four thousand, five hundred fifty-seven".