6680818587017 has 2 divisors, whose sum is σ = 6680818587018. Its totient is φ = 6680818587016.

The previous prime is 6680818586989. The next prime is 6680818587059. The reversal of 6680818587017 is 7107858180866.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5135916257536 + 1544902329481 = 2266256^2 + 1242941^2 .

It is a cyclic number.

It is not a de Polignac number, because 6680818587017 - 2²⁰ = 6680817538441 is a prime.

It is a super-3 number, since 3×6680818587017³ (a number of 39 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (6680818580017) 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, 3340409293508 + 3340409293509.

It is an arithmetic number, because the mean of its divisors is an integer number (3340409293509).

Almost surely, 2^{6680818587017} is an apocalyptic number.

It is an amenable number.

6680818587017 is a deficient number, since it is larger than the sum of its proper divisors (1).

6680818587017 is an equidigital number, since it uses as much as digits as its factorization.

6680818587017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36126720, while the sum is 65.

The spelling of 6680818587017 in words is "six trillion, six hundred eighty billion, eight hundred eighteen million, five hundred eighty-seven thousand, seventeen".