165365047297 has 2 divisors, whose sum is σ = 165365047298. Its totient is φ = 165365047296.

The previous prime is 165365047277. The next prime is 165365047301. The reversal of 165365047297 is 792740563561.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161538882561 + 3826164736 = 401919^2 + 61856^2 .

It is an emirp because it is prime and its reverse (792740563561) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165365047297 is a prime.

It is not a weakly prime, because it can be changed into another prime (165365047207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82682523648 + 82682523649.

It is an arithmetic number, because the mean of its divisors is an integer number (82682523649).

Almost surely, 2^165365047297 is an apocalyptic number.

It is an amenable number.

165365047297 is a deficient number, since it is larger than the sum of its proper divisors (1).

165365047297 is an equidigital number, since it uses as much as digits as its factorization.

165365047297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9525600, while the sum is 55.

The spelling of 165365047297 in words is "one hundred sixty-five billion, three hundred sixty-five million, forty-seven thousand, two hundred ninety-seven".