6497316185819 has 2 divisors, whose sum is σ = 6497316185820. Its totient is φ = 6497316185818.

The previous prime is 6497316185813. The next prime is 6497316185879. The reversal of 6497316185819 is 9185816137946.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6497316185819 - 2³⁶ = 6428596709083 is a prime.

It is a super-2 number, since 2×6497316185819² (a number of 26 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (6497316185813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3248658092909 + 3248658092910.

It is an arithmetic number, because the mean of its divisors is an integer number (3248658092910).

Almost surely, 2^{6497316185819} is an apocalyptic number.

6497316185819 is a deficient number, since it is larger than the sum of its proper divisors (1).

6497316185819 is an equidigital number, since it uses as much as digits as its factorization.

6497316185819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78382080, while the sum is 68.

The spelling of 6497316185819 in words is "six trillion, four hundred ninety-seven billion, three hundred sixteen million, one hundred eighty-five thousand, eight hundred nineteen".