18213716875 has 10 divisors (see below), whose sum is σ = 22759861388. Its totient is φ = 14570973000.

The previous prime is 18213716849. The next prime is 18213716893. The reversal of 18213716875 is 57861731281.

It is a de Polignac number, because none of the positive numbers 2^k-18213716875 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 14570349 + ... + 14571598.

Almost surely, 2^18213716875 is an apocalyptic number.

18213716875 is a deficient number, since it is larger than the sum of its proper divisors (4546144513).

18213716875 is an frugal number, since it uses more digits than its factorization.

18213716875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29141967 (or 29141952 counting only the distinct ones).

The product of its digits is 564480, while the sum is 49.

The spelling of 18213716875 in words is "eighteen billion, two hundred thirteen million, seven hundred sixteen thousand, eight hundred seventy-five".