23426191857 has 4 divisors (see below), whose sum is σ = 31234922480. Its totient is φ = 15617461236.

The previous prime is 23426191823. The next prime is 23426191883. The reversal of 23426191857 is 75819162432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 23426191857 - 2¹⁴ = 23426175473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23426191457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3904365307 + ... + 3904365312.

It is an arithmetic number, because the mean of its divisors is an integer number (7808730620).

Almost surely, 2^23426191857 is an apocalyptic number.

It is an amenable number.

23426191857 is a deficient number, since it is larger than the sum of its proper divisors (7808730623).

23426191857 is an equidigital number, since it uses as much as digits as its factorization.

23426191857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7808730622.

The product of its digits is 725760, while the sum is 48.

The spelling of 23426191857 in words is "twenty-three billion, four hundred twenty-six million, one hundred ninety-one thousand, eight hundred fifty-seven".