17983339985 has 64 divisors (see below), whose sum is σ = 24211353600. Its totient is φ = 12739064832.

The previous prime is 17983339967. The next prime is 17983339999. The reversal of 17983339985 is 58993338971.

It is not a de Polignac number, because 17983339985 - 2⁶ = 17983339921 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (65).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 64921667 + ... + 64921943.

It is an arithmetic number, because the mean of its divisors is an integer number (378302400).

Almost surely, 2^17983339985 is an apocalyptic number.

It is an amenable number.

17983339985 is a deficient number, since it is larger than the sum of its proper divisors (6228013615).

17983339985 is a wasteful number, since it uses less digits than its factorization.

17983339985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690.

The product of its digits is 44089920, while the sum is 65.

The spelling of 17983339985 in words is "seventeen billion, nine hundred eighty-three million, three hundred thirty-nine thousand, nine hundred eighty-five".