166000646430413 has 2 divisors, whose sum is σ = 166000646430414. Its totient is φ = 166000646430412.

The previous prime is 166000646430337. The next prime is 166000646430467. The reversal of 166000646430413 is 314034646000661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123663007029769 + 42337639400644 = 11120387^2 + 6506738^2 .

It is a cyclic number.

It is not a de Polignac number, because 166000646430413 - 2¹² = 166000646426317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166000646438413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83000323215206 + 83000323215207.

It is an arithmetic number, because the mean of its divisors is an integer number (83000323215207).

Almost surely, 2^{166000646430413} is an apocalyptic number.

It is an amenable number.

166000646430413 is a deficient number, since it is larger than the sum of its proper divisors (1).

166000646430413 is an equidigital number, since it uses as much as digits as its factorization.

166000646430413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 44.

The spelling of 166000646430413 in words is "one hundred sixty-six trillion, six hundred forty-six million, four hundred thirty thousand, four hundred thirteen".