166666684884 has 72 divisors (see below), whose sum is σ = 457831509408. Its totient is φ = 47045315520.

The previous prime is 166666684871. The next prime is 166666684907. The reversal of 166666684884 is 488486666661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1658707 + ... + 1756314.

It is an arithmetic number, because the mean of its divisors is an integer number (6358770964).

Almost surely, 2^166666684884 is an apocalyptic number.

166666684884 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

166666684884 is an abundant number, since it is smaller than the sum of its proper divisors (291164824524).

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

166666684884 is a wasteful number, since it uses less digits than its factorization.

166666684884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3415125 (or 3415116 counting only the distinct ones).

The product of its digits is 382205952, while the sum is 69.

The spelling of 166666684884 in words is "one hundred sixty-six billion, six hundred sixty-six million, six hundred eighty-four thousand, eight hundred eighty-four".