166050572689 has 2 divisors, whose sum is σ = 166050572690. Its totient is φ = 166050572688.

The previous prime is 166050572683. The next prime is 166050572771. The reversal of 166050572689 is 986275050661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149775192064 + 16275380625 = 387008^2 + 127575^2 .

It is an emirp because it is prime and its reverse (986275050661) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166050572689 is a prime.

It is not a weakly prime, because it can be changed into another prime (166050572683) 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, 83025286344 + 83025286345.

It is an arithmetic number, because the mean of its divisors is an integer number (83025286345).

Almost surely, 2^166050572689 is an apocalyptic number.

It is an amenable number.

166050572689 is a deficient number, since it is larger than the sum of its proper divisors (1).

166050572689 is an equidigital number, since it uses as much as digits as its factorization.

166050572689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5443200, while the sum is 55.

The spelling of 166050572689 in words is "one hundred sixty-six billion, fifty million, five hundred seventy-two thousand, six hundred eighty-nine".