165145623199 has 2 divisors, whose sum is σ = 165145623200. Its totient is φ = 165145623198.

The previous prime is 165145623113. The next prime is 165145623217. The reversal of 165145623199 is 991326541561.

It is a strong prime.

It is an emirp because it is prime and its reverse (991326541561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165145623199 - 2¹³ = 165145615007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165145653199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82572811599 + 82572811600.

It is an arithmetic number, because the mean of its divisors is an integer number (82572811600).

Almost surely, 2^165145623199 is an apocalyptic number.

165145623199 is a deficient number, since it is larger than the sum of its proper divisors (1).

165145623199 is an equidigital number, since it uses as much as digits as its factorization.

165145623199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1749600, while the sum is 52.

The spelling of 165145623199 in words is "one hundred sixty-five billion, one hundred forty-five million, six hundred twenty-three thousand, one hundred ninety-nine".