18087693875 has 16 divisors (see below), whose sum is σ = 22609314624. Its totient is φ = 14447160000.

The previous prime is 18087693863. The next prime is 18087693889. The reversal of 18087693875 is 57839678081.

It is a de Polignac number, because none of the positive numbers 2^k-18087693875 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35786 + ... + 193535.

It is an arithmetic number, because the mean of its divisors is an integer number (1413082164).

Almost surely, 2^18087693875 is an apocalyptic number.

18087693875 is a deficient number, since it is larger than the sum of its proper divisors (4521620749).

18087693875 is an equidigital number, since it uses as much as digits as its factorization.

18087693875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229967 (or 229957 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 62.

The spelling of 18087693875 in words is "eighteen billion, eighty-seven million, six hundred ninety-three thousand, eight hundred seventy-five".