1291168599613 has 2 divisors, whose sum is σ = 1291168599614. Its totient is φ = 1291168599612.

The previous prime is 1291168599587. The next prime is 1291168599629. The reversal of 1291168599613 is 3169958611921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1022650832644 + 268517766969 = 1011262^2 + 518187^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1291168599613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1291168599113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645584299806 + 645584299807.

It is an arithmetic number, because the mean of its divisors is an integer number (645584299807).

Almost surely, 2^{1291168599613} is an apocalyptic number.

It is an amenable number.

1291168599613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1291168599613 is an equidigital number, since it uses as much as digits as its factorization.

1291168599613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6298560, while the sum is 61.

The spelling of 1291168599613 in words is "one trillion, two hundred ninety-one billion, one hundred sixty-eight million, five hundred ninety-nine thousand, six hundred thirteen".