166590805013 has 2 divisors, whose sum is σ = 166590805014. Its totient is φ = 166590805012.

The previous prime is 166590805009. The next prime is 166590805019. The reversal of 166590805013 is 310508095661.

166590805013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164785659844 + 1805145169 = 405938^2 + 42487^2 .

It is a cyclic number.

It is not a de Polignac number, because 166590805013 - 2² = 166590805009 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166590805019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83295402506 + 83295402507.

It is an arithmetic number, because the mean of its divisors is an integer number (83295402507).

Almost surely, 2^166590805013 is an apocalyptic number.

It is an amenable number.

166590805013 is a deficient number, since it is larger than the sum of its proper divisors (1).

166590805013 is an equidigital number, since it uses as much as digits as its factorization.

166590805013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 166590805013 in words is "one hundred sixty-six billion, five hundred ninety million, eight hundred five thousand, thirteen".