1261465068811 has 2 divisors, whose sum is σ = 1261465068812. Its totient is φ = 1261465068810.

The previous prime is 1261465068761. The next prime is 1261465068841. The reversal of 1261465068811 is 1188605641621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1261465068811 - 2¹⁹ = 1261464544523 is a prime.

It is not a weakly prime, because it can be changed into another prime (1261465068841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630732534405 + 630732534406.

It is an arithmetic number, because the mean of its divisors is an integer number (630732534406).

Almost surely, 2^{1261465068811} is an apocalyptic number.

1261465068811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1261465068811 is an equidigital number, since it uses as much as digits as its factorization.

1261465068811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 552960, while the sum is 49.

The spelling of 1261465068811 in words is "one trillion, two hundred sixty-one billion, four hundred sixty-five million, sixty-eight thousand, eight hundred eleven".