23139965901 has 16 divisors (see below), whose sum is σ = 33314308160. Its totient is φ = 14202397440.

The previous prime is 23139965887. The next prime is 23139965909. The reversal of 23139965901 is 10956993132.

It is not a de Polignac number, because 23139965901 - 2⁵ = 23139965869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23139965909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 767980 + ... + 797541.

It is an arithmetic number, because the mean of its divisors is an integer number (2082144260).

Almost surely, 2^23139965901 is an apocalyptic number.

It is an amenable number.

23139965901 is a deficient number, since it is larger than the sum of its proper divisors (10174342259).

23139965901 is a wasteful number, since it uses less digits than its factorization.

23139965901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565916.

The product of its (nonzero) digits is 393660, while the sum is 48.

The spelling of 23139965901 in words is "twenty-three billion, one hundred thirty-nine million, nine hundred sixty-five thousand, nine hundred one".