1299247342279 has 2 divisors, whose sum is σ = 1299247342280. Its totient is φ = 1299247342278.

The previous prime is 1299247342249. The next prime is 1299247342357. The reversal of 1299247342279 is 9722437429921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1299247342279 - 2³¹ = 1297099858631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1299247342249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649623671139 + 649623671140.

It is an arithmetic number, because the mean of its divisors is an integer number (649623671140).

Almost surely, 2^{1299247342279} is an apocalyptic number.

1299247342279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1299247342279 is an equidigital number, since it uses as much as digits as its factorization.

1299247342279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27433728, while the sum is 61.

The spelling of 1299247342279 in words is "one trillion, two hundred ninety-nine billion, two hundred forty-seven million, three hundred forty-two thousand, two hundred seventy-nine".