16684334176842 has 40 divisors (see below), whose sum is σ = 37520232287076. Its totient is φ = 5541367292928.

The previous prime is 16684334176837. The next prime is 16684334176957. The reversal of 16684334176842 is 24867143348661.

16684334176842 is a `hidden beast` number, since 1 + 6 + 68 + 433 + 41 + 7 + 68 + 42 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14446620358641 + 2237713818201 = 3800871^2 + 1495899^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16684334176842.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 185857143 + ... + 185946890.

Almost surely, 2^{16684334176842} is an apocalyptic number.

16684334176842 is an abundant number, since it is smaller than the sum of its proper divisors (20835898110234).

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

16684334176842 is a wasteful number, since it uses less digits than its factorization.

16684334176842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371804324 (or 371804315 counting only the distinct ones).

The product of its digits is 111476736, while the sum is 63.

The spelling of 16684334176842 in words is "sixteen trillion, six hundred eighty-four billion, three hundred thirty-four million, one hundred seventy-six thousand, eight hundred forty-two".