166984866670 has 16 divisors (see below), whose sum is σ = 300692890080. Its totient is φ = 66767251104.

The previous prime is 166984866661. The next prime is 166984866703. The reversal of 166984866670 is 76668489661.

It is a junction number, because it is equal to n+sod(n) for n = 166984866596 and 166984866605.

It is a congruent number.

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, 3310665 + ... + 3360724.

It is an arithmetic number, because the mean of its divisors is an integer number (18793305630).

Almost surely, 2^166984866670 is an apocalyptic number.

166984866670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166984866670 is a deficient number, since it is larger than the sum of its proper divisors (133708023410).

166984866670 is a wasteful number, since it uses less digits than its factorization.

166984866670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6673899.

The product of its (nonzero) digits is 125411328, while the sum is 67.

The spelling of 166984866670 in words is "one hundred sixty-six billion, nine hundred eighty-four million, eight hundred sixty-six thousand, six hundred seventy".