23138169526 has 4 divisors (see below), whose sum is σ = 34707254292. Its totient is φ = 11569084762.

The previous prime is 23138169517. The next prime is 23138169589. The reversal of 23138169526 is 62596183132.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5784542380 + ... + 5784542383.

It is an arithmetic number, because the mean of its divisors is an integer number (8676813573).

Almost surely, 2^23138169526 is an apocalyptic number.

23138169526 is a deficient number, since it is larger than the sum of its proper divisors (11569084766).

23138169526 is a wasteful number, since it uses less digits than its factorization.

23138169526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11569084765.

The product of its digits is 466560, while the sum is 46.

The spelling of 23138169526 in words is "twenty-three billion, one hundred thirty-eight million, one hundred sixty-nine thousand, five hundred twenty-six".