16685186868498 has 32 divisors (see below), whose sum is σ = 34824411417600. Its totient is φ = 5319433118736.

The previous prime is 16685186868481. The next prime is 16685186868509. The reversal of 16685186868498 is 89486868158661.

It is a self number, because there is not a number n which added to its sum of digits gives 16685186868498.

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, 3940318 + ... + 6992601.

It is an arithmetic number, because the mean of its divisors is an integer number (1088262856800).

Almost surely, 2^{16685186868498} is an apocalyptic number.

16685186868498 is an abundant number, since it is smaller than the sum of its proper divisors (18139224549102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16685186868498 is a wasteful number, since it uses less digits than its factorization.

16685186868498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10944006.

The product of its digits is 7644119040, while the sum is 84.

The spelling of 16685186868498 in words is "sixteen trillion, six hundred eighty-five billion, one hundred eighty-six million, eight hundred sixty-eight thousand, four hundred ninety-eight".