23938370639 has 2 divisors, whose sum is σ = 23938370640. Its totient is φ = 23938370638.

The previous prime is 23938370597. The next prime is 23938370647. The reversal of 23938370639 is 93607383932.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23938370639 - 2²⁰ = 23937322063 is a prime.

It is a super-3 number, since 3×23938370639³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23938370689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11969185319 + 11969185320.

It is an arithmetic number, because the mean of its divisors is an integer number (11969185320).

Almost surely, 2^23938370639 is an apocalyptic number.

23938370639 is a deficient number, since it is larger than the sum of its proper divisors (1).

23938370639 is an equidigital number, since it uses as much as digits as its factorization.

23938370639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4408992, while the sum is 53.

The spelling of 23938370639 in words is "twenty-three billion, nine hundred thirty-eight million, three hundred seventy thousand, six hundred thirty-nine".