165000166613 has 2 divisors, whose sum is σ = 165000166614. Its totient is φ = 165000166612.

The previous prime is 165000166607. The next prime is 165000166627. The reversal of 165000166613 is 316661000561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161545313329 + 3454853284 = 401927^2 + 58778^2 .

It is a cyclic number.

It is not a de Polignac number, because 165000166613 - 2¹⁸ = 164999904469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165000169613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82500083306 + 82500083307.

It is an arithmetic number, because the mean of its divisors is an integer number (82500083307).

Almost surely, 2^165000166613 is an apocalyptic number.

It is an amenable number.

165000166613 is a deficient number, since it is larger than the sum of its proper divisors (1).

165000166613 is an equidigital number, since it uses as much as digits as its factorization.

165000166613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 35.

The spelling of 165000166613 in words is "one hundred sixty-five billion, one hundred sixty-six thousand, six hundred thirteen".