23815971911 has 2 divisors, whose sum is σ = 23815971912. Its totient is φ = 23815971910.

The previous prime is 23815971863. The next prime is 23815971913. The reversal of 23815971911 is 11917951832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23815971911 - 2⁶ = 23815971847 is a prime.

Together with 23815971913, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23815971913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11907985955 + 11907985956.

It is an arithmetic number, because the mean of its divisors is an integer number (11907985956).

Almost surely, 2^23815971911 is an apocalyptic number.

23815971911 is a deficient number, since it is larger than the sum of its proper divisors (1).

23815971911 is an equidigital number, since it uses as much as digits as its factorization.

23815971911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 47.

The spelling of 23815971911 in words is "twenty-three billion, eight hundred fifteen million, nine hundred seventy-one thousand, nine hundred eleven".