23493788251 has 2 divisors, whose sum is σ = 23493788252. Its totient is φ = 23493788250.

The previous prime is 23493788207. The next prime is 23493788281. The reversal of 23493788251 is 15288739432.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23493788251 - 2²¹ = 23491691099 is a prime.

It is not a weakly prime, because it can be changed into another prime (23493788281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11746894125 + 11746894126.

It is an arithmetic number, because the mean of its divisors is an integer number (11746894126).

Almost surely, 2^23493788251 is an apocalyptic number.

23493788251 is a deficient number, since it is larger than the sum of its proper divisors (1).

23493788251 is an equidigital number, since it uses as much as digits as its factorization.

23493788251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 52.

The spelling of 23493788251 in words is "twenty-three billion, four hundred ninety-three million, seven hundred eighty-eight thousand, two hundred fifty-one".