166443012 has 60 divisors (see below), whose sum is σ = 442540560. Its totient is φ = 54534384.

The previous prime is 166443001. The next prime is 166443029. The reversal of 166443012 is 210344661.

166443012 is a `hidden beast` number, since 1 + 6 + 644 + 3 + 0 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14763 + ... + 23469.

It is an arithmetic number, because the mean of its divisors is an integer number (7375676).

Almost surely, 2^166443012 is an apocalyptic number.

166443012 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 166443012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221270280).

166443012 is an abundant number, since it is smaller than the sum of its proper divisors (276097548).

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

166443012 is a wasteful number, since it uses less digits than its factorization.

166443012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8782 (or 8771 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 166443012 is about 12901.2794714323. The cubic root of 166443012 is about 550.0749341428.

Adding to 166443012 its reverse (210344661), we get a palindrome (376787673).

The spelling of 166443012 in words is "one hundred sixty-six million, four hundred forty-three thousand, twelve".