165450316139 has 2 divisors, whose sum is σ = 165450316140. Its totient is φ = 165450316138.

The previous prime is 165450316123. The next prime is 165450316177. The reversal of 165450316139 is 931613054561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165450316139 - 2⁴ = 165450316123 is a prime.

It is a super-3 number, since 3×165450316139³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 165450316139.

It is not a weakly prime, because it can be changed into another prime (165450316189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82725158069 + 82725158070.

It is an arithmetic number, because the mean of its divisors is an integer number (82725158070).

Almost surely, 2^165450316139 is an apocalyptic number.

165450316139 is a deficient number, since it is larger than the sum of its proper divisors (1).

165450316139 is an equidigital number, since it uses as much as digits as its factorization.

165450316139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 291600, while the sum is 44.

The spelling of 165450316139 in words is "one hundred sixty-five billion, four hundred fifty million, three hundred sixteen thousand, one hundred thirty-nine".