16668180016836 has 24 divisors (see below), whose sum is σ = 38892965514144. Its totient is φ = 5555982080640.

The previous prime is 16668180016801. The next prime is 16668180016877. The reversal of 16668180016836 is 63861008186661.

It is a self number, because there is not a number n which added to its sum of digits gives 16668180016836.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8846085 + ... + 10563596.

It is an arithmetic number, because the mean of its divisors is an integer number (1620540229756).

Almost surely, 2^{16668180016836} is an apocalyptic number.

It is an amenable number.

16668180016836 is an abundant number, since it is smaller than the sum of its proper divisors (22224785497308).

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

16668180016836 is a wasteful number, since it uses less digits than its factorization.

16668180016836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19481251 (or 19481249 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 60.

The spelling of 16668180016836 in words is "sixteen trillion, six hundred sixty-eight billion, one hundred eighty million, sixteen thousand, eight hundred thirty-six".