6331364649817 has 2 divisors, whose sum is σ = 6331364649818. Its totient is φ = 6331364649816.

The previous prime is 6331364649721. The next prime is 6331364649851. The reversal of 6331364649817 is 7189464631336.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6264888856576 + 66475793241 = 2502976^2 + 257829^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6331364649817 is a prime.

It is not a weakly prime, because it can be changed into another prime (6331364649017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3165682324908 + 3165682324909.

It is an arithmetic number, because the mean of its divisors is an integer number (3165682324909).

Almost surely, 2^{6331364649817} is an apocalyptic number.

It is an amenable number.

6331364649817 is a deficient number, since it is larger than the sum of its proper divisors (1).

6331364649817 is an equidigital number, since it uses as much as digits as its factorization.

6331364649817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47029248, while the sum is 61.

The spelling of 6331364649817 in words is "six trillion, three hundred thirty-one billion, three hundred sixty-four million, six hundred forty-nine thousand, eight hundred seventeen".