65663464319 has 2 divisors, whose sum is σ = 65663464320. Its totient is φ = 65663464318.

The previous prime is 65663464301. The next prime is 65663464343. The reversal of 65663464319 is 91346436656.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65663464319 is a prime.

It is a super-2 number, since 2×65663464319² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65663464519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32831732159 + 32831732160.

It is an arithmetic number, because the mean of its divisors is an integer number (32831732160).

Almost surely, 2^65663464319 is an apocalyptic number.

65663464319 is a deficient number, since it is larger than the sum of its proper divisors (1).

65663464319 is an equidigital number, since it uses as much as digits as its factorization.

65663464319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8398080, while the sum is 53.

The spelling of 65663464319 in words is "sixty-five billion, six hundred sixty-three million, four hundred sixty-four thousand, three hundred nineteen".