166606060015589 has 2 divisors, whose sum is σ = 166606060015590. Its totient is φ = 166606060015588.

The previous prime is 166606060015583. The next prime is 166606060015609. The reversal of 166606060015589 is 985510060606661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134407619164900 + 32198440850689 = 11593430^2 + 5674367^2 .

It is a cyclic number.

It is not a de Polignac number, because 166606060015589 - 2²⁸ = 166605791580133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166606060015583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83303030007794 + 83303030007795.

It is an arithmetic number, because the mean of its divisors is an integer number (83303030007795).

Almost surely, 2^{166606060015589} is an apocalyptic number.

It is an amenable number.

166606060015589 is a deficient number, since it is larger than the sum of its proper divisors (1).

166606060015589 is an equidigital number, since it uses as much as digits as its factorization.

166606060015589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13996800, while the sum is 59.

The spelling of 166606060015589 in words is "one hundred sixty-six trillion, six hundred six billion, sixty million, fifteen thousand, five hundred eighty-nine".