6667278961279 has 2 divisors, whose sum is σ = 6667278961280. Its totient is φ = 6667278961278.

The previous prime is 6667278961267. The next prime is 6667278961313. The reversal of 6667278961279 is 9721698727666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6667278961279 - 2⁹ = 6667278960767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6667278961219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3333639480639 + 3333639480640.

It is an arithmetic number, because the mean of its divisors is an integer number (3333639480640).

Almost surely, 2^{6667278961279} is an apocalyptic number.

6667278961279 is a deficient number, since it is larger than the sum of its proper divisors (1).

6667278961279 is an equidigital number, since it uses as much as digits as its factorization.

6667278961279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152216576, while the sum is 76.

The spelling of 6667278961279 in words is "six trillion, six hundred sixty-seven billion, two hundred seventy-eight million, nine hundred sixty-one thousand, two hundred seventy-nine".