6816266917 has 2 divisors, whose sum is σ = 6816266918. Its totient is φ = 6816266916.

The previous prime is 6816266881. The next prime is 6816266957. The reversal of 6816266917 is 7196626186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6750429921 + 65836996 = 82161^2 + 8114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6816266917 is a prime.

It is a super-2 number, since 2×6816266917² = 92922989367577369778, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6816266957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3408133458 + 3408133459.

It is an arithmetic number, because the mean of its divisors is an integer number (3408133459).

Almost surely, 2^6816266917 is an apocalyptic number.

It is an amenable number.

6816266917 is a deficient number, since it is larger than the sum of its proper divisors (1).

6816266917 is an equidigital number, since it uses as much as digits as its factorization.

6816266917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 52.

The square root of 6816266917 is about 82560.6862677388. The cubic root of 6816266917 is about 1896.0459707330.

The spelling of 6816266917 in words is "six billion, eight hundred sixteen million, two hundred sixty-six thousand, nine hundred seventeen".