23558138399 has 16 divisors (see below), whose sum is σ = 26414035200. Its totient is φ = 20879570304.

The previous prime is 23558138377. The next prime is 23558138407. The reversal of 23558138399 is 99383185532.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23558138399 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 (23558135399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164429 + ... + 272310.

It is an arithmetic number, because the mean of its divisors is an integer number (1650877200).

Almost surely, 2^23558138399 is an apocalyptic number.

23558138399 is a deficient number, since it is larger than the sum of its proper divisors (2855896801).

23558138399 is a wasteful number, since it uses less digits than its factorization.

23558138399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436942.

The product of its digits is 6998400, while the sum is 56.

The spelling of 23558138399 in words is "twenty-three billion, five hundred fifty-eight million, one hundred thirty-eight thousand, three hundred ninety-nine".