23118636239 has 4 divisors (see below), whose sum is σ = 23124107160. Its totient is φ = 23113165320.

The previous prime is 23118636223. The next prime is 23118636253. The reversal of 23118636239 is 93263681132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23118636239 - 2⁴ = 23118636223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23118636239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23118336239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2729117 + ... + 2737574.

It is an arithmetic number, because the mean of its divisors is an integer number (5781026790).

Almost surely, 2^23118636239 is an apocalyptic number.

23118636239 is a deficient number, since it is larger than the sum of its proper divisors (5470921).

23118636239 is an equidigital number, since it uses as much as digits as its factorization.

23118636239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5470920.

The product of its digits is 279936, while the sum is 44.

The spelling of 23118636239 in words is "twenty-three billion, one hundred eighteen million, six hundred thirty-six thousand, two hundred thirty-nine".