23591881329 has 16 divisors (see below), whose sum is σ = 32201813952. Its totient is φ = 15355263168.

The previous prime is 23591881319. The next prime is 23591881387. The reversal of 23591881329 is 92318819532.

It is a de Polignac number, because none of the positive numbers 2^k-23591881329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23591881319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255919 + ... + 335675.

It is an arithmetic number, because the mean of its divisors is an integer number (2012613372).

Almost surely, 2^23591881329 is an apocalyptic number.

It is an amenable number.

23591881329 is a deficient number, since it is larger than the sum of its proper divisors (8609932623).

23591881329 is a wasteful number, since it uses less digits than its factorization.

23591881329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82096.

The product of its digits is 933120, while the sum is 51.

The spelling of 23591881329 in words is "twenty-three billion, five hundred ninety-one million, eight hundred eighty-one thousand, three hundred twenty-nine".