23138643608 has 16 divisors (see below), whose sum is σ = 43485159480. Its totient is φ = 11542601088.

The previous prime is 23138643599. The next prime is 23138643623. The reversal of 23138643608 is 80634683132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3336410 + ... + 3343337.

Almost surely, 2^23138643608 is an apocalyptic number.

It is an amenable number.

23138643608 is a deficient number, since it is larger than the sum of its proper divisors (20346515872).

23138643608 is a wasteful number, since it uses less digits than its factorization.

23138643608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6680186 (or 6680182 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 44.

The spelling of 23138643608 in words is "twenty-three billion, one hundred thirty-eight million, six hundred forty-three thousand, six hundred eight".