16685000000185 has 24 divisors (see below), whose sum is σ = 22008071158920. Its totient is φ = 12134314832640.

The previous prime is 16685000000171. The next prime is 16685000000219. The reversal of 16685000000185 is 58100000058661.

It can be written as a sum of positive squares in 4 ways, for example, as 4171320149161 + 12513679851024 = 2042381^2 + 3537468^2 .

It is not a de Polignac number, because 16685000000185 - 2⁴¹ = 14485976744633 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35664061 + ... + 36128869.

It is an arithmetic number, because the mean of its divisors is an integer number (917002964955).

Almost surely, 2^{16685000000185} is an apocalyptic number.

It is an amenable number.

16685000000185 is a deficient number, since it is larger than the sum of its proper divisors (5323071158735).

16685000000185 is a wasteful number, since it uses less digits than its factorization.

16685000000185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524169 (or 524158 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 40.

The spelling of 16685000000185 in words is "sixteen trillion, six hundred eighty-five billion, one hundred eighty-five", and thus it is an aban number.