1291500292811 has 2 divisors, whose sum is σ = 1291500292812. Its totient is φ = 1291500292810.

The previous prime is 1291500292793. The next prime is 1291500292813. The reversal of 1291500292811 is 1182920051921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1291500292811 - 2¹⁴ = 1291500276427 is a prime.

Together with 1291500292813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1291500292813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645750146405 + 645750146406.

It is an arithmetic number, because the mean of its divisors is an integer number (645750146406).

Almost surely, 2^{1291500292811} is an apocalyptic number.

1291500292811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1291500292811 is an equidigital number, since it uses as much as digits as its factorization.

1291500292811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 41.

The spelling of 1291500292811 in words is "one trillion, two hundred ninety-one billion, five hundred million, two hundred ninety-two thousand, eight hundred eleven".