165043222013 has 2 divisors, whose sum is σ = 165043222014. Its totient is φ = 165043222012.

The previous prime is 165043222009. The next prime is 165043222129. The reversal of 165043222013 is 310222340561.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146951088964 + 18092133049 = 383342^2 + 134507^2 .

It is a cyclic number.

It is not a de Polignac number, because 165043222013 - 2² = 165043222009 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165043722013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82521611006 + 82521611007.

It is an arithmetic number, because the mean of its divisors is an integer number (82521611007).

Almost surely, 2^165043222013 is an apocalyptic number.

It is an amenable number.

165043222013 is a deficient number, since it is larger than the sum of its proper divisors (1).

165043222013 is an equidigital number, since it uses as much as digits as its factorization.

165043222013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 165043222013 its reverse (310222340561), we get a palindrome (475265562574).

The spelling of 165043222013 in words is "one hundred sixty-five billion, forty-three million, two hundred twenty-two thousand, thirteen".