23138643593 has 16 divisors (see below), whose sum is σ = 26724962880. Its totient is φ = 19852807104.

The previous prime is 23138643587. The next prime is 23138643599. The reversal of 23138643593 is 39534683132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23138643587) and next prime (23138643599).

It is not a de Polignac number, because 23138643593 - 2¹⁴ = 23138627209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23138643599) 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, 870671 + ... + 896852.

It is an arithmetic number, because the mean of its divisors is an integer number (1670310180).

Almost surely, 2^23138643593 is an apocalyptic number.

It is an amenable number.

23138643593 is a deficient number, since it is larger than the sum of its proper divisors (3586319287).

23138643593 is a wasteful number, since it uses less digits than its factorization.

23138643593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1767608.

The product of its digits is 1399680, while the sum is 47.

The spelling of 23138643593 in words is "twenty-three billion, one hundred thirty-eight million, six hundred forty-three thousand, five hundred ninety-three".