1299247342871 has 2 divisors, whose sum is σ = 1299247342872. Its totient is φ = 1299247342870.

The previous prime is 1299247342853. The next prime is 1299247342927. The reversal of 1299247342871 is 1782437429921.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1299247342871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1299247342871.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1299247342571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649623671435 + 649623671436.

It is an arithmetic number, because the mean of its divisors is an integer number (649623671436).

Almost surely, 2^{1299247342871} is an apocalyptic number.

1299247342871 is a deficient number, since it is larger than the sum of its proper divisors (1).

1299247342871 is an equidigital number, since it uses as much as digits as its factorization.

1299247342871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12192768, while the sum is 59.

The spelling of 1299247342871 in words is "one trillion, two hundred ninety-nine billion, two hundred forty-seven million, three hundred forty-two thousand, eight hundred seventy-one".