23917729813 has 16 divisors (see below), whose sum is σ = 24578588160. Its totient is φ = 23265380736.

The previous prime is 23917729799. The next prime is 23917729819. The reversal of 23917729813 is 31892771932.

It is a cyclic number.

It is not a de Polignac number, because 23917729813 - 2²¹ = 23915632661 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 (23917729819) 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, 3616756 + ... + 3623362.

It is an arithmetic number, because the mean of its divisors is an integer number (1536161760).

Almost surely, 2^23917729813 is an apocalyptic number.

It is an amenable number.

23917729813 is a deficient number, since it is larger than the sum of its proper divisors (660858347).

23917729813 is a wasteful number, since it uses less digits than its factorization.

23917729813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7236.

The product of its digits is 1143072, while the sum is 52.

The spelling of 23917729813 in words is "twenty-three billion, nine hundred seventeen million, seven hundred twenty-nine thousand, eight hundred thirteen".