665365341301 has 2 divisors, whose sum is σ = 665365341302. Its totient is φ = 665365341300.

The previous prime is 665365341299. The next prime is 665365341323. The reversal of 665365341301 is 103143563566.

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., 655656195076 + 9709146225 = 809726^2 + 98535^2 .

It is a cyclic number.

It is not a de Polignac number, because 665365341301 - 2¹ = 665365341299 is a prime.

It is a super-2 number, since 2×665365341301² (a number of 24 digits) contains 22 as substring.

Together with 665365341299, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (665365341391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332682670650 + 332682670651.

It is an arithmetic number, because the mean of its divisors is an integer number (332682670651).

Almost surely, 2^665365341301 is an apocalyptic number.

It is an amenable number.

665365341301 is a deficient number, since it is larger than the sum of its proper divisors (1).

665365341301 is an equidigital number, since it uses as much as digits as its factorization.

665365341301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 583200, while the sum is 43.

The spelling of 665365341301 in words is "six hundred sixty-five billion, three hundred sixty-five million, three hundred forty-one thousand, three hundred one".