1291168599629 has 2 divisors, whose sum is σ = 1291168599630. Its totient is φ = 1291168599628.

The previous prime is 1291168599613. The next prime is 1291168599733. The reversal of 1291168599629 is 9269958611921.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 824545722025 + 466622877604 = 908045^2 + 683098^2 .

It is a cyclic number.

It is not a de Polignac number, because 1291168599629 - 2⁴ = 1291168599613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1291168599029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645584299814 + 645584299815.

It is an arithmetic number, because the mean of its divisors is an integer number (645584299815).

Almost surely, 2^{1291168599629} is an apocalyptic number.

It is an amenable number.

1291168599629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1291168599629 is an equidigital number, since it uses as much as digits as its factorization.

1291168599629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37791360, while the sum is 68.

The spelling of 1291168599629 in words is "one trillion, two hundred ninety-one billion, one hundred sixty-eight million, five hundred ninety-nine thousand, six hundred twenty-nine".