1666683168336 has 30 divisors (see below), whose sum is σ = 4664398034010. Its totient is φ = 555561056064.

The previous prime is 1666683168263. The next prime is 1666683168343. The reversal of 1666683168336 is 6338613866661.

It can be written as a sum of positive squares in only one way, i.e., 1613255619600 + 53427548736 = 1270140^2 + 231144^2 .

It is a super-2 number, since 2×1666683168336² (a number of 25 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5787094191 + ... + 5787094478.

It is an arithmetic number, because the mean of its divisors is an integer number (155479934467).

Almost surely, 2^{1666683168336} is an apocalyptic number.

1666683168336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1666683168336 is an abundant number, since it is smaller than the sum of its proper divisors (2997714865674).

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

1666683168336 is a wasteful number, since it uses less digits than its factorization.

1666683168336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11574188683 (or 11574188674 counting only the distinct ones).

The product of its digits is 80621568, while the sum is 63.

The spelling of 1666683168336 in words is "one trillion, six hundred sixty-six billion, six hundred eighty-three million, one hundred sixty-eight thousand, three hundred thirty-six".