23204138605 has 16 divisors (see below), whose sum is σ = 28188961920. Its totient is φ = 18334116288.

The previous prime is 23204138579. The next prime is 23204138623. The reversal of 23204138605 is 50683140232.

It is a cyclic number.

It is not a de Polignac number, because 23204138605 - 2³³ = 14614204013 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1869199 + ... + 1881571.

It is an arithmetic number, because the mean of its divisors is an integer number (1761810120).

Almost surely, 2^23204138605 is an apocalyptic number.

It is an amenable number.

23204138605 is a deficient number, since it is larger than the sum of its proper divisors (4984823315).

23204138605 is a wasteful number, since it uses less digits than its factorization.

23204138605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16980.

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 23204138605 its reverse (50683140232), we get a palindrome (73887278837).

The spelling of 23204138605 in words is "twenty-three billion, two hundred four million, one hundred thirty-eight thousand, six hundred five".