16985998385 has 8 divisors (see below), whose sum is σ = 21455998080. Its totient is φ = 12873598704.

The previous prime is 16985998327. The next prime is 16985998391. The reversal of 16985998385 is 58389958961.

16985998385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16985998385 is a prime.

It is a super-2 number, since 2×16985998385² (a number of 21 digits) contains 22 as substring.

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 in 7 ways as a sum of consecutive naturals, for example, 89399897 + ... + 89400086.

It is an arithmetic number, because the mean of its divisors is an integer number (2681999760).

Almost surely, 2^16985998385 is an apocalyptic number.

It is an amenable number.

16985998385 is a deficient number, since it is larger than the sum of its proper divisors (4469999695).

16985998385 is a wasteful number, since it uses less digits than its factorization.

16985998385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178800007.

The product of its digits is 167961600, while the sum is 71.

The spelling of 16985998385 in words is "sixteen billion, nine hundred eighty-five million, nine hundred ninety-eight thousand, three hundred eighty-five".