165302257421303 has 2 divisors, whose sum is σ = 165302257421304. Its totient is φ = 165302257421302.

The previous prime is 165302257421263. The next prime is 165302257421311. The reversal of 165302257421303 is 303124752203561.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165302257421303 - 2⁶ = 165302257421239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165302257421333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82651128710651 + 82651128710652.

It is an arithmetic number, because the mean of its divisors is an integer number (82651128710652).

Almost surely, 2^{165302257421303} is an apocalyptic number.

165302257421303 is a deficient number, since it is larger than the sum of its proper divisors (1).

165302257421303 is an equidigital number, since it uses as much as digits as its factorization.

165302257421303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 907200, while the sum is 44.

The spelling of 165302257421303 in words is "one hundred sixty-five trillion, three hundred two billion, two hundred fifty-seven million, four hundred twenty-one thousand, three hundred three".