64383324665591 has 2 divisors, whose sum is σ = 64383324665592. Its totient is φ = 64383324665590.

The previous prime is 64383324665567. The next prime is 64383324665609. The reversal of 64383324665591 is 19556642338346.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64383324665591 - 2³⁸ = 64108446758647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64383324665291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32191662332795 + 32191662332796.

It is an arithmetic number, because the mean of its divisors is an integer number (32191662332796).

Almost surely, 2^{64383324665591} is an apocalyptic number.

64383324665591 is a deficient number, since it is larger than the sum of its proper divisors (1).

64383324665591 is an equidigital number, since it uses as much as digits as its factorization.

64383324665591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 335923200, while the sum is 65.

The spelling of 64383324665591 in words is "sixty-four trillion, three hundred eighty-three billion, three hundred twenty-four million, six hundred sixty-five thousand, five hundred ninety-one".