16685186868398 has 32 divisors (see below), whose sum is σ = 27157309185888. Its totient is φ = 7657249868800.

The previous prime is 16685186868397. The next prime is 16685186868463. The reversal of 16685186868398 is 89386868158661.

It is a super-2 number, since 2×16685186868398² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16685186868397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1036853 + ... + 5869023.

It is an arithmetic number, because the mean of its divisors is an integer number (848665912059).

Almost surely, 2^{16685186868398} is an apocalyptic number.

16685186868398 is a deficient number, since it is larger than the sum of its proper divisors (10472122317490).

16685186868398 is a wasteful number, since it uses less digits than its factorization.

16685186868398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4834708.

The product of its digits is 5733089280, while the sum is 83.

The spelling of 16685186868398 in words is "sixteen trillion, six hundred eighty-five billion, one hundred eighty-six million, eight hundred sixty-eight thousand, three hundred ninety-eight".