166680196468812 has 192 divisors, whose sum is σ = 480403780792320. Its totient is φ = 49630086720000.

The previous prime is 166680196468811. The next prime is 166680196468859. The reversal of 166680196468812 is 218864691086661.

It is not an unprimeable number, because it can be changed into a prime (166680196468811) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1806765687 + ... + 1806857937.

It is an arithmetic number, because the mean of its divisors is an integer number (2502103024960).

Almost surely, 2^{166680196468812} is an apocalyptic number.

166680196468812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166680196468812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240201890396160).

166680196468812 is an abundant number, since it is smaller than the sum of its proper divisors (313723584323508).

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

166680196468812 is a wasteful number, since it uses less digits than its factorization.

166680196468812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133821 (or 133813 counting only the distinct ones).

The product of its (nonzero) digits is 286654464, while the sum is 72.

The spelling of 166680196468812 in words is "one hundred sixty-six trillion, six hundred eighty billion, one hundred ninety-six million, four hundred sixty-eight thousand, eight hundred twelve".