6668013407399 has 2 divisors, whose sum is σ = 6668013407400. Its totient is φ = 6668013407398.

The previous prime is 6668013407381. The next prime is 6668013407507. The reversal of 6668013407399 is 9937043108666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6668013407399 - 2²⁰ = 6668012358823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6668013407369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3334006703699 + 3334006703700.

It is an arithmetic number, because the mean of its divisors is an integer number (3334006703700).

Almost surely, 2^{6668013407399} is an apocalyptic number.

6668013407399 is a deficient number, since it is larger than the sum of its proper divisors (1).

6668013407399 is an equidigital number, since it uses as much as digits as its factorization.

6668013407399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35271936, while the sum is 62.

The spelling of 6668013407399 in words is "six trillion, six hundred sixty-eight billion, thirteen million, four hundred seven thousand, three hundred ninety-nine".