23720336913 has 16 divisors (see below), whose sum is σ = 38925681536. Its totient is φ = 12511825920.

The previous prime is 23720336911. The next prime is 23720336933. The reversal of 23720336913 is 31963302732.

It is not a de Polignac number, because 23720336913 - 2¹ = 23720336911 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (23720336911) 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, 43443568 + ... + 43444113.

It is an arithmetic number, because the mean of its divisors is an integer number (2432855096).

Almost surely, 2^23720336913 is an apocalyptic number.

It is an amenable number.

23720336913 is a deficient number, since it is larger than the sum of its proper divisors (15205344623).

23720336913 is a wasteful number, since it uses less digits than its factorization.

23720336913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86887704.

The product of its (nonzero) digits is 122472, while the sum is 39.

The spelling of 23720336913 in words is "twenty-three billion, seven hundred twenty million, three hundred thirty-six thousand, nine hundred thirteen".