23039819917 has 2 divisors, whose sum is σ = 23039819918. Its totient is φ = 23039819916.

The previous prime is 23039819911. The next prime is 23039819927. The reversal of 23039819917 is 71991893032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19748961961 + 3290857956 = 140531^2 + 57366^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23039819917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23039819911) 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, 11519909958 + 11519909959.

It is an arithmetic number, because the mean of its divisors is an integer number (11519909959).

Almost surely, 2^23039819917 is an apocalyptic number.

It is an amenable number.

23039819917 is a deficient number, since it is larger than the sum of its proper divisors (1).

23039819917 is an equidigital number, since it uses as much as digits as its factorization.

23039819917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 734832, while the sum is 52.

The spelling of 23039819917 in words is "twenty-three billion, thirty-nine million, eight hundred nineteen thousand, nine hundred seventeen".