6680981913601 has 2 divisors, whose sum is σ = 6680981913602. Its totient is φ = 6680981913600.

The previous prime is 6680981913583. The next prime is 6680981913629. The reversal of 6680981913601 is 1063191890866.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6476337868225 + 204644045376 = 2544865^2 + 452376^2 .

It is a cyclic number.

It is not a de Polignac number, because 6680981913601 - 2¹⁷ = 6680981782529 is a prime.

It is not a weakly prime, because it can be changed into another prime (6680981913101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3340490956800 + 3340490956801.

It is an arithmetic number, because the mean of its divisors is an integer number (3340490956801).

Almost surely, 2^{6680981913601} is an apocalyptic number.

It is an amenable number.

6680981913601 is a deficient number, since it is larger than the sum of its proper divisors (1).

6680981913601 is an equidigital number, since it uses as much as digits as its factorization.

6680981913601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3359232, while the sum is 58.

The spelling of 6680981913601 in words is "six trillion, six hundred eighty billion, nine hundred eighty-one million, nine hundred thirteen thousand, six hundred one".