65717585863 has 2 divisors, whose sum is σ = 65717585864. Its totient is φ = 65717585862.

The previous prime is 65717585851. The next prime is 65717585917. The reversal of 65717585863 is 36858571756.

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-65717585863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65717585803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32858792931 + 32858792932.

It is an arithmetic number, because the mean of its divisors is an integer number (32858792932).

Almost surely, 2^65717585863 is an apocalyptic number.

65717585863 is a deficient number, since it is larger than the sum of its proper divisors (1).

65717585863 is an equidigital number, since it uses as much as digits as its factorization.

65717585863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336000, while the sum is 61.

The spelling of 65717585863 in words is "sixty-five billion, seven hundred seventeen million, five hundred eighty-five thousand, eight hundred sixty-three".