23115402442591 has 2 divisors, whose sum is σ = 23115402442592. Its totient is φ = 23115402442590.

The previous prime is 23115402442501. The next prime is 23115402442673. The reversal of 23115402442591 is 19524420451132.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23115402442591 - 2²⁵ = 23115368888159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23115402442501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11557701221295 + 11557701221296.

It is an arithmetic number, because the mean of its divisors is an integer number (11557701221296).

Almost surely, 2^{23115402442591} is an apocalyptic number.

23115402442591 is a deficient number, since it is larger than the sum of its proper divisors (1).

23115402442591 is an equidigital number, since it uses as much as digits as its factorization.

23115402442591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 23115402442591 in words is "twenty-three trillion, one hundred fifteen billion, four hundred two million, four hundred forty-two thousand, five hundred ninety-one".