6461967719 has 2 divisors, whose sum is σ = 6461967720. Its totient is φ = 6461967718.

The previous prime is 6461967713. The next prime is 6461967727. The reversal of 6461967719 is 9177691646.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6461967719 - 2²⁸ = 6193532263 is a prime.

It is a super-2 number, since 2×6461967719² = 83514053602796125922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6461967713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3230983859 + 3230983860.

It is an arithmetic number, because the mean of its divisors is an integer number (3230983860).

Almost surely, 2^6461967719 is an apocalyptic number.

6461967719 is a deficient number, since it is larger than the sum of its proper divisors (1).

6461967719 is an equidigital number, since it uses as much as digits as its factorization.

6461967719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3429216, while the sum is 56.

The square root of 6461967719 is about 80386.3652555581. The cubic root of 6461967719 is about 1862.6085608778.

The spelling of 6461967719 in words is "six billion, four hundred sixty-one million, nine hundred sixty-seven thousand, seven hundred nineteen".