23873973218 has 4 divisors (see below), whose sum is σ = 35810959830. Its totient is φ = 11936986608.

The previous prime is 23873973169. The next prime is 23873973257. The reversal of 23873973218 is 81237937832.

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

It can be written as a sum of positive squares in only one way, i.e., 22179251329 + 1694721889 = 148927^2 + 41167^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23873973218.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5968493303 + ... + 5968493306.

Almost surely, 2^23873973218 is an apocalyptic number.

23873973218 is a deficient number, since it is larger than the sum of its proper divisors (11936986612).

23873973218 is a wasteful number, since it uses less digits than its factorization.

23873973218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11936986611.

The product of its digits is 3048192, while the sum is 53.

The spelling of 23873973218 in words is "twenty-three billion, eight hundred seventy-three million, nine hundred seventy-three thousand, two hundred eighteen".