65243115366719 has 2 divisors, whose sum is σ = 65243115366720. Its totient is φ = 65243115366718.

The previous prime is 65243115366589. The next prime is 65243115366721. The reversal of 65243115366719 is 91766351134256.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65243115366719 - 2⁴⁰ = 64143603738943 is a prime.

It is a super-2 number, since 2×65243115366719² (a number of 28 digits) contains 22 as substring.

Together with 65243115366721, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65243115366739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32621557683359 + 32621557683360.

It is an arithmetic number, because the mean of its divisors is an integer number (32621557683360).

Almost surely, 2^{65243115366719} is an apocalyptic number.

65243115366719 is a deficient number, since it is larger than the sum of its proper divisors (1).

65243115366719 is an equidigital number, since it uses as much as digits as its factorization.

65243115366719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24494400, while the sum is 59.

The spelling of 65243115366719 in words is "sixty-five trillion, two hundred forty-three billion, one hundred fifteen million, three hundred sixty-six thousand, seven hundred nineteen".