165230305604437 has 2 divisors, whose sum is σ = 165230305604438. Its totient is φ = 165230305604436.

The previous prime is 165230305604431. The next prime is 165230305604453. The reversal of 165230305604437 is 734406503032561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105143716189521 + 60086589414916 = 10253961^2 + 7751554^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165230305604437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165230305604431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82615152802218 + 82615152802219.

It is an arithmetic number, because the mean of its divisors is an integer number (82615152802219).

Almost surely, 2^{165230305604437} is an apocalyptic number.

It is an amenable number.

165230305604437 is a deficient number, since it is larger than the sum of its proper divisors (1).

165230305604437 is an equidigital number, since it uses as much as digits as its factorization.

165230305604437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5443200, while the sum is 49.

Adding to 165230305604437 its reverse (734406503032561), we get a palindrome (899636808636998).

The spelling of 165230305604437 in words is "one hundred sixty-five trillion, two hundred thirty billion, three hundred five million, six hundred four thousand, four hundred thirty-seven".