1311265445612 has 12 divisors (see below), whose sum is σ = 2295419967456. Its totient is φ = 655431169200.

The previous prime is 1311265445603. The next prime is 1311265445669. The reversal of 1311265445612 is 2165445621131.

It is a self number, because there is not a number n which added to its sum of digits gives 1311265445612.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50373764 + ... + 50399787.

It is an arithmetic number, because the mean of its divisors is an integer number (191284997288).

Almost surely, 2^{1311265445612} is an apocalyptic number.

It is an amenable number.

1311265445612 is a deficient number, since it is larger than the sum of its proper divisors (984154521844).

1311265445612 is a wasteful number, since it uses less digits than its factorization.

1311265445612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100776808 (or 100776806 counting only the distinct ones).

The product of its digits is 172800, while the sum is 41.

The spelling of 1311265445612 in words is "one trillion, three hundred eleven billion, two hundred sixty-five million, four hundred forty-five thousand, six hundred twelve".