166445444050 has 24 divisors (see below), whose sum is σ = 310287412656. Its totient is φ = 66427879440.

The previous prime is 166445443991. The next prime is 166445444119. The reversal of 166445444050 is 50444544661.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 166445443988 and 166445444006.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3735084 + ... + 3779383.

It is an arithmetic number, because the mean of its divisors is an integer number (12928642194).

Almost surely, 2^166445444050 is an apocalyptic number.

166445444050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166445444050 is a deficient number, since it is larger than the sum of its proper divisors (143841968606).

166445444050 is a wasteful number, since it uses less digits than its factorization.

166445444050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7514922 (or 7514917 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 43.

The spelling of 166445444050 in words is "one hundred sixty-six billion, four hundred forty-five million, four hundred forty-four thousand, fifty".