16856672372724 has 12 divisors (see below), whose sum is σ = 39332235536384. Its totient is φ = 5618890790904.

The previous prime is 16856672372669. The next prime is 16856672372741. The reversal of 16856672372724 is 42727327665861.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 702361348852 + ... + 702361348875.

Almost surely, 2^{16856672372724} is an apocalyptic number.

It is an amenable number.

16856672372724 is an abundant number, since it is smaller than the sum of its proper divisors (22475563163660).

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

16856672372724 is a wasteful number, since it uses less digits than its factorization.

16856672372724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404722697734 (or 1404722697732 counting only the distinct ones).

The product of its digits is 284497920, while the sum is 66.

The spelling of 16856672372724 in words is "sixteen trillion, eight hundred fifty-six billion, six hundred seventy-two million, three hundred seventy-two thousand, seven hundred twenty-four".