23188838399 has 4 divisors (see below), whose sum is σ = 23190083520. Its totient is φ = 23187593280.

The previous prime is 23188838377. The next prime is 23188838417. The reversal of 23188838399 is 99383888132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23188838399 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 (23188831399) 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, 594194 + ... + 632015.

It is an arithmetic number, because the mean of its divisors is an integer number (5797520880).

Almost surely, 2^23188838399 is an apocalyptic number.

23188838399 is a deficient number, since it is larger than the sum of its proper divisors (1245121).

23188838399 is a wasteful number, since it uses less digits than its factorization.

23188838399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245120.

The product of its digits is 17915904, while the sum is 62.

The spelling of 23188838399 in words is "twenty-three billion, one hundred eighty-eight million, eight hundred thirty-eight thousand, three hundred ninety-nine".