16866685033686 has 48 divisors (see below), whose sum is σ = 38953852236000. Its totient is φ = 5255995532544.

The previous prime is 16866685033643. The next prime is 16866685033717. The reversal of 16866685033686 is 68633058666861.

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 23 ways as a sum of consecutive naturals, for example, 184920466 + ... + 185011653.

It is an arithmetic number, because the mean of its divisors is an integer number (811538588250).

Almost surely, 2^{16866685033686} is an apocalyptic number.

16866685033686 is an abundant number, since it is smaller than the sum of its proper divisors (22087167202314).

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

16866685033686 is a wasteful number, since it uses less digits than its factorization.

16866685033686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369932293 (or 369932290 counting only the distinct ones).

The product of its (nonzero) digits is 1074954240, while the sum is 72.

The spelling of 16866685033686 in words is "sixteen trillion, eight hundred sixty-six billion, six hundred eighty-five million, thirty-three thousand, six hundred eighty-six".