23233509917 has 2 divisors, whose sum is σ = 23233509918. Its totient is φ = 23233509916.

The previous prime is 23233509913. The next prime is 23233509931. The reversal of 23233509917 is 71990533232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21618997156 + 1614512761 = 147034^2 + 40181^2 .

It is a cyclic number.

It is not a de Polignac number, because 23233509917 - 2² = 23233509913 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23233509911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11616754958 + 11616754959.

It is an arithmetic number, because the mean of its divisors is an integer number (11616754959).

Almost surely, 2^23233509917 is an apocalyptic number.

It is an amenable number.

23233509917 is a deficient number, since it is larger than the sum of its proper divisors (1).

23233509917 is an equidigital number, since it uses as much as digits as its factorization.

23233509917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 306180, while the sum is 44.

The spelling of 23233509917 in words is "twenty-three billion, two hundred thirty-three million, five hundred nine thousand, nine hundred seventeen".