1311046013646 has 12 divisors (see below), whose sum is σ = 2840599696272. Its totient is φ = 437015337876.

The previous prime is 1311046013617. The next prime is 1311046013659. The reversal of 1311046013646 is 6463106401131.

1311046013646 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 0 + 4 + 6 + 0 + 1 + 3 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1311046013646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36417944806 + ... + 36417944841.

It is an arithmetic number, because the mean of its divisors is an integer number (236716641356).

Almost surely, 2^{1311046013646} is an apocalyptic number.

1311046013646 is an abundant number, since it is smaller than the sum of its proper divisors (1529553682626).

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

1311046013646 is a wasteful number, since it uses less digits than its factorization.

1311046013646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72835889655 (or 72835889652 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 1311046013646 in words is "one trillion, three hundred eleven billion, forty-six million, thirteen thousand, six hundred forty-six".