16666853503685 has 16 divisors (see below), whose sum is σ = 24935344463232. Its totient is φ = 10389726859200.

The previous prime is 16666853503649. The next prime is 16666853503697. The reversal of 16666853503685 is 58630535866661.

It is not a de Polignac number, because 16666853503685 - 2²⁶ = 16666786394821 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 21645263906 + ... + 21645264675.

It is an arithmetic number, because the mean of its divisors is an integer number (1558459028952).

Almost surely, 2^{16666853503685} is an apocalyptic number.

It is an amenable number.

16666853503685 is a deficient number, since it is larger than the sum of its proper divisors (8268490959547).

16666853503685 is a wasteful number, since it uses less digits than its factorization.

16666853503685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43290528604.

The product of its (nonzero) digits is 559872000, while the sum is 68.

The spelling of 16666853503685 in words is "sixteen trillion, six hundred sixty-six billion, eight hundred fifty-three million, five hundred three thousand, six hundred eighty-five".