166450303673 has 2 divisors, whose sum is σ = 166450303674. Its totient is φ = 166450303672.

The previous prime is 166450303637. The next prime is 166450303687. The reversal of 166450303673 is 376303054661.

It is a happy number.

Together with previous prime (166450303637) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165219486784 + 1230816889 = 406472^2 + 35083^2 .

It is a cyclic number.

It is not a de Polignac number, because 166450303673 - 2²⁰ = 166449255097 is a prime.

It is not a weakly prime, because it can be changed into another prime (166450303973) 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 as a sum of consecutive naturals, namely, 83225151836 + 83225151837.

It is an arithmetic number, because the mean of its divisors is an integer number (83225151837).

Almost surely, 2^166450303673 is an apocalyptic number.

It is an amenable number.

166450303673 is a deficient number, since it is larger than the sum of its proper divisors (1).

166450303673 is an equidigital number, since it uses as much as digits as its factorization.

166450303673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 44.

The spelling of 166450303673 in words is "one hundred sixty-six billion, four hundred fifty million, three hundred three thousand, six hundred seventy-three".