23551904694251 has 2 divisors, whose sum is σ = 23551904694252. Its totient is φ = 23551904694250.

The previous prime is 23551904694167. The next prime is 23551904694319. The reversal of 23551904694251 is 15249640915532.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23551904694251 - 2¹⁰ = 23551904693227 is a prime.

It is not a weakly prime, because it can be changed into another prime (23551904664251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11775952347125 + 11775952347126.

It is an arithmetic number, because the mean of its divisors is an integer number (11775952347126).

Almost surely, 2^{23551904694251} is an apocalyptic number.

23551904694251 is a deficient number, since it is larger than the sum of its proper divisors (1).

23551904694251 is an equidigital number, since it uses as much as digits as its factorization.

23551904694251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664000, while the sum is 56.

The spelling of 23551904694251 in words is "twenty-three trillion, five hundred fifty-one billion, nine hundred four million, six hundred ninety-four thousand, two hundred fifty-one".