23451192889 has 4 divisors (see below), whose sum is σ = 23670363024. Its totient is φ = 23232022756.

The previous prime is 23451192881. The next prime is 23451192901. The reversal of 23451192889 is 98829115432.

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 23451192889 - 2³ = 23451192881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23451192881) 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, 109584907 + ... + 109585120.

It is an arithmetic number, because the mean of its divisors is an integer number (5917590756).

Almost surely, 2^23451192889 is an apocalyptic number.

It is an amenable number.

23451192889 is a deficient number, since it is larger than the sum of its proper divisors (219170135).

23451192889 is a wasteful number, since it uses less digits than its factorization.

23451192889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219170134.

The product of its digits is 1244160, while the sum is 52.

The spelling of 23451192889 in words is "twenty-three billion, four hundred fifty-one million, one hundred ninety-two thousand, eight hundred eighty-nine".