23152979438 has 4 divisors (see below), whose sum is σ = 34729469160. Its totient is φ = 11576489718.

The previous prime is 23152979389. The next prime is 23152979441. The reversal of 23152979438 is 83497925132.

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

It is a self number, because there is not a number n which added to its sum of digits gives 23152979438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5788244858 + ... + 5788244861.

It is an arithmetic number, because the mean of its divisors is an integer number (8682367290).

Almost surely, 2^23152979438 is an apocalyptic number.

23152979438 is a deficient number, since it is larger than the sum of its proper divisors (11576489722).

23152979438 is a wasteful number, since it uses less digits than its factorization.

23152979438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11576489721.

The product of its digits is 3265920, while the sum is 53.

The spelling of 23152979438 in words is "twenty-three billion, one hundred fifty-two million, nine hundred seventy-nine thousand, four hundred thirty-eight".