165747317353 has 2 divisors, whose sum is σ = 165747317354. Its totient is φ = 165747317352.

The previous prime is 165747317299. The next prime is 165747317363. The reversal of 165747317353 is 353713747561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165130887769 + 616429584 = 406363^2 + 24828^2 .

It is a cyclic number.

It is not a de Polignac number, because 165747317353 - 2¹⁷ = 165747186281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165747317353.

It is not a weakly prime, because it can be changed into another prime (165747317363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82873658676 + 82873658677.

It is an arithmetic number, because the mean of its divisors is an integer number (82873658677).

Almost surely, 2^165747317353 is an apocalyptic number.

It is an amenable number.

165747317353 is a deficient number, since it is larger than the sum of its proper divisors (1).

165747317353 is an equidigital number, since it uses as much as digits as its factorization.

165747317353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5556600, while the sum is 52.

The spelling of 165747317353 in words is "one hundred sixty-five billion, seven hundred forty-seven million, three hundred seventeen thousand, three hundred fifty-three".