6461442316313 has 2 divisors, whose sum is σ = 6461442316314. Its totient is φ = 6461442316312.

The previous prime is 6461442316279. The next prime is 6461442316349. The reversal of 6461442316313 is 3136132441646.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4270781828569 + 2190660487744 = 2066587^2 + 1480088^2 .

It is a cyclic number.

It is not a de Polignac number, because 6461442316313 - 2²⁰ = 6461441267737 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (6461442316213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3230721158156 + 3230721158157.

It is an arithmetic number, because the mean of its divisors is an integer number (3230721158157).

Almost surely, 2^{6461442316313} is an apocalyptic number.

It is an amenable number.

6461442316313 is a deficient number, since it is larger than the sum of its proper divisors (1).

6461442316313 is an equidigital number, since it uses as much as digits as its factorization.

6461442316313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 44.

Adding to 6461442316313 its reverse (3136132441646), we get a palindrome (9597574757959).

The spelling of 6461442316313 in words is "six trillion, four hundred sixty-one billion, four hundred forty-two million, three hundred sixteen thousand, three hundred thirteen".