6461967713 has 2 divisors, whose sum is σ = 6461967714. Its totient is φ = 6461967712.

The previous prime is 6461967709. The next prime is 6461967719. The reversal of 6461967713 is 3177691646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6099141409 + 362826304 = 78097^2 + 19048^2 .

It is a cyclic number.

It is not a de Polignac number, because 6461967713 - 2² = 6461967709 is a prime.

It is not a weakly prime, because it can be changed into another prime (6461967719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3230983856 + 3230983857.

It is an arithmetic number, because the mean of its divisors is an integer number (3230983857).

Almost surely, 2^6461967713 is an apocalyptic number.

It is an amenable number.

6461967713 is a deficient number, since it is larger than the sum of its proper divisors (1).

6461967713 is an equidigital number, since it uses as much as digits as its factorization.

6461967713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 50.

The square root of 6461967713 is about 80386.3652182383. The cubic root of 6461967713 is about 1862.6085603013.

The spelling of 6461967713 in words is "six billion, four hundred sixty-one million, nine hundred sixty-seven thousand, seven hundred thirteen".