166444725066 has 16 divisors (see below), whose sum is σ = 337103241600. Its totient is φ = 54779276448.

The previous prime is 166444725059. The next prime is 166444725079. The reversal of 166444725066 is 660527444661.

It is an unprimeable number.

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, 175574131 + ... + 175575078.

It is an arithmetic number, because the mean of its divisors is an integer number (21068952600).

Almost surely, 2^166444725066 is an apocalyptic number.

166444725066 is an abundant number, since it is smaller than the sum of its proper divisors (170658516534).

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

166444725066 is a wasteful number, since it uses less digits than its factorization.

166444725066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351149293.

The product of its (nonzero) digits is 5806080, while the sum is 51.

The spelling of 166444725066 in words is "one hundred sixty-six billion, four hundred forty-four million, seven hundred twenty-five thousand, sixty-six".