23638816318 has 32 divisors (see below), whose sum is σ = 38845255680. Its totient is φ = 10722555360.

The previous prime is 23638816303. The next prime is 23638816321. The reversal of 23638816318 is 81361883632.

It is a super-2 number, since 2×23638816318² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 749283 + ... + 780193.

It is an arithmetic number, because the mean of its divisors is an integer number (1213914240).

Almost surely, 2^23638816318 is an apocalyptic number.

23638816318 is a deficient number, since it is larger than the sum of its proper divisors (15206439362).

23638816318 is a wasteful number, since it uses less digits than its factorization.

23638816318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31432.

The product of its digits is 995328, while the sum is 49.

The spelling of 23638816318 in words is "twenty-three billion, six hundred thirty-eight million, eight hundred sixteen thousand, three hundred eighteen".