166446205133 has 8 divisors (see below), whose sum is σ = 179296215168. Its totient is φ = 153602831664.

The previous prime is 166446205117. The next prime is 166446205141. The reversal of 166446205133 is 331502644661.

166446205133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166446205133 - 2⁴ = 166446205117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166446205433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1606985 + ... + 1707422.

It is an arithmetic number, because the mean of its divisors is an integer number (22412026896).

Almost surely, 2^166446205133 is an apocalyptic number.

166446205133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

166446205133 is a deficient number, since it is larger than the sum of its proper divisors (12850010035).

166446205133 is a wasteful number, since it uses less digits than its factorization.

166446205133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3318283.

The product of its (nonzero) digits is 311040, while the sum is 41.

Adding to 166446205133 its reverse (331502644661), we get a palindrome (497948849794).

The spelling of 166446205133 in words is "one hundred sixty-six billion, four hundred forty-six million, two hundred five thousand, one hundred thirty-three".