1311116265157 has 2 divisors, whose sum is σ = 1311116265158. Its totient is φ = 1311116265156.

The previous prime is 1311116265133. The next prime is 1311116265169. The reversal of 1311116265157 is 7515626111131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 816870708481 + 494245556676 = 903809^2 + 703026^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311116265157 - 2⁷ = 1311116265029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311116265187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655558132578 + 655558132579.

It is an arithmetic number, because the mean of its divisors is an integer number (655558132579).

Almost surely, 2^{1311116265157} is an apocalyptic number.

It is an amenable number.

1311116265157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311116265157 is an equidigital number, since it uses as much as digits as its factorization.

1311116265157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 40.

The spelling of 1311116265157 in words is "one trillion, three hundred eleven billion, one hundred sixteen million, two hundred sixty-five thousand, one hundred fifty-seven".