16838686901844 has 36 divisors (see below), whose sum is σ = 42593083076544. Its totient is φ = 5609120972112.

The previous prime is 16838686901809. The next prime is 16838686901851. The reversal of 16838686901844 is 44810968683861.

16838686901844 is a `hidden beast` number, since 1 + 6 + 8 + 386 + 8 + 69 + 0 + 184 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 157223302 + ... + 157330365.

Almost surely, 2^{16838686901844} is an apocalyptic number.

It is an amenable number.

16838686901844 is an abundant number, since it is smaller than the sum of its proper divisors (25754396174700).

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

16838686901844 is a wasteful number, since it uses less digits than its factorization.

16838686901844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314555164 (or 314555159 counting only the distinct ones).

The product of its (nonzero) digits is 382205952, while the sum is 72.

The spelling of 16838686901844 in words is "sixteen trillion, eight hundred thirty-eight billion, six hundred eighty-six million, nine hundred one thousand, eight hundred forty-four".