166166120 has 32 divisors (see below), whose sum is σ = 374245920. Its totient is φ = 66400320.

The previous prime is 166166113. The next prime is 166166129. The reversal of 166166120 is 21661661.

It is a super-2 number, since 2×166166120² = 55222358871708800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166166129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67715 + ... + 70125.

It is an arithmetic number, because the mean of its divisors is an integer number (11695185).

Almost surely, 2^166166120 is an apocalyptic number.

166166120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166166120 is an abundant number, since it is smaller than the sum of its proper divisors (208079800).

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

166166120 is a wasteful number, since it uses less digits than its factorization.

166166120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4145 (or 4141 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 166166120 is about 12890.5438209565. The cubic root of 166166120 is about 549.7697328091.

The spelling of 166166120 in words is "one hundred sixty-six million, one hundred sixty-six thousand, one hundred twenty".