1279043040199 has 2 divisors, whose sum is σ = 1279043040200. Its totient is φ = 1279043040198.

The previous prime is 1279043040169. The next prime is 1279043040257. The reversal of 1279043040199 is 9910403409721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1279043040199 - 2⁵ = 1279043040167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1279043040109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639521520099 + 639521520100.

It is an arithmetic number, because the mean of its divisors is an integer number (639521520100).

Almost surely, 2^{1279043040199} is an apocalyptic number.

1279043040199 is a deficient number, since it is larger than the sum of its proper divisors (1).

1279043040199 is an equidigital number, since it uses as much as digits as its factorization.

1279043040199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 49.

The spelling of 1279043040199 in words is "one trillion, two hundred seventy-nine billion, forty-three million, forty thousand, one hundred ninety-nine".