23115805819 has 2 divisors, whose sum is σ = 23115805820. Its totient is φ = 23115805818.

The previous prime is 23115805807. The next prime is 23115805831. The reversal of 23115805819 is 91850851132.

It is a balanced prime because it is at equal distance from previous prime (23115805807) and next prime (23115805831).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23115805819 is a prime.

It is a super-2 number, since 2×23115805819² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23115865819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11557902909 + 11557902910.

It is an arithmetic number, because the mean of its divisors is an integer number (11557902910).

Almost surely, 2^23115805819 is an apocalyptic number.

23115805819 is a deficient number, since it is larger than the sum of its proper divisors (1).

23115805819 is an equidigital number, since it uses as much as digits as its factorization.

23115805819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 43.

The spelling of 23115805819 in words is "twenty-three billion, one hundred fifteen million, eight hundred five thousand, eight hundred nineteen".