1311045116056 has 16 divisors (see below), whose sum is σ = 2647302638400. Its totient is φ = 605097745824.

The previous prime is 1311045116021. The next prime is 1311045116071. The reversal of 1311045116056 is 6506115401131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6303101416 + ... + 6303101623.

It is an arithmetic number, because the mean of its divisors is an integer number (165456414900).

Almost surely, 2^{1311045116056} is an apocalyptic number.

It is an amenable number.

1311045116056 is an abundant number, since it is smaller than the sum of its proper divisors (1336257522344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311045116056 is a wasteful number, since it uses less digits than its factorization.

1311045116056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12606203058 (or 12606203054 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 34.

The spelling of 1311045116056 in words is "one trillion, three hundred eleven billion, forty-five million, one hundred sixteen thousand, fifty-six".