23568434251 has 4 divisors (see below), whose sum is σ = 23569191232. Its totient is φ = 23567677272.

The previous prime is 23568434243. The next prime is 23568434261. The reversal of 23568434251 is 15243486532.

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 23568434251 - 2³ = 23568434243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23568434198 and 23568434207.

It is not an unprimeable number, because it can be changed into a prime (23568434261) 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, 329691 + ... + 394756.

It is an arithmetic number, because the mean of its divisors is an integer number (5892297808).

Almost surely, 2^23568434251 is an apocalyptic number.

23568434251 is a deficient number, since it is larger than the sum of its proper divisors (756981).

23568434251 is an equidigital number, since it uses as much as digits as its factorization.

23568434251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756980.

The product of its digits is 691200, while the sum is 43.

The spelling of 23568434251 in words is "twenty-three billion, five hundred sixty-eight million, four hundred thirty-four thousand, two hundred fifty-one".