23839958081 has 2 divisors, whose sum is σ = 23839958082. Its totient is φ = 23839958080.

The previous prime is 23839958057. The next prime is 23839958099. The reversal of 23839958081 is 18085993832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23831640625 + 8317456 = 154375^2 + 2884^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23839958081 is a prime.

It is a super-2 number, since 2×23839958081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23839958281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11919979040 + 11919979041.

It is an arithmetic number, because the mean of its divisors is an integer number (11919979041).

Almost surely, 2^23839958081 is an apocalyptic number.

It is an amenable number.

23839958081 is a deficient number, since it is larger than the sum of its proper divisors (1).

23839958081 is an equidigital number, since it uses as much as digits as its factorization.

23839958081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3732480, while the sum is 56.

The spelling of 23839958081 in words is "twenty-three billion, eight hundred thirty-nine million, nine hundred fifty-eight thousand, eighty-one".