166303364089 has 2 divisors, whose sum is σ = 166303364090. Its totient is φ = 166303364088.

The previous prime is 166303364053. The next prime is 166303364237. The reversal of 166303364089 is 980463303661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126426469225 + 39876894864 = 355565^2 + 199692^2 .

It is a cyclic number.

It is not a de Polignac number, because 166303364089 - 2¹⁷ = 166303233017 is a prime.

It is not a weakly prime, because it can be changed into another prime (166303365089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83151682044 + 83151682045.

It is an arithmetic number, because the mean of its divisors is an integer number (83151682045).

Almost surely, 2^166303364089 is an apocalyptic number.

It is an amenable number.

166303364089 is a deficient number, since it is larger than the sum of its proper divisors (1).

166303364089 is an equidigital number, since it uses as much as digits as its factorization.

166303364089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1679616, while the sum is 49.

The spelling of 166303364089 in words is "one hundred sixty-six billion, three hundred three million, three hundred sixty-four thousand, eighty-nine".