1296277885811 has 2 divisors, whose sum is σ = 1296277885812. Its totient is φ = 1296277885810.

The previous prime is 1296277885741. The next prime is 1296277885829. The reversal of 1296277885811 is 1185887726921.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1296277885811 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1296277885711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648138942905 + 648138942906.

It is an arithmetic number, because the mean of its divisors is an integer number (648138942906).

Almost surely, 2^{1296277885811} is an apocalyptic number.

1296277885811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1296277885811 is an equidigital number, since it uses as much as digits as its factorization.

1296277885811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27095040, while the sum is 65.

The spelling of 1296277885811 in words is "one trillion, two hundred ninety-six billion, two hundred seventy-seven million, eight hundred eighty-five thousand, eight hundred eleven".