166644280280 has 64 divisors (see below), whose sum is σ = 380186792640. Its totient is φ = 65727148032.

The previous prime is 166644280277. The next prime is 166644280337. The reversal of 166644280280 is 82082446661.

166644280280 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20602397 + ... + 20610483.

It is an arithmetic number, because the mean of its divisors is an integer number (5940418635).

Almost surely, 2^166644280280 is an apocalyptic number.

166644280280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166644280280 is an abundant number, since it is smaller than the sum of its proper divisors (213542512360).

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

166644280280 is a wasteful number, since it uses less digits than its factorization.

166644280280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15228 (or 15224 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 47.

The spelling of 166644280280 in words is "one hundred sixty-six billion, six hundred forty-four million, two hundred eighty thousand, two hundred eighty".