1311643444041 has 24 divisors (see below), whose sum is σ = 2174707945280. Its totient is φ = 746237559456.

The previous prime is 1311643443991. The next prime is 1311643444051. The reversal of 1311643444041 is 1404443461131.

1311643444041 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 643 + 4 + 4 + 4 + 0 + 4 + 1 = 666.

It is not a de Polignac number, because 1311643444041 - 2¹¹ = 1311643441993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311643443987 and 1311643444005.

It is not an unprimeable number, because it can be changed into a prime (1311643444051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45443515 + ... + 45472368.

Almost surely, 2^{1311643444041} is an apocalyptic number.

It is an amenable number.

1311643444041 is a deficient number, since it is larger than the sum of its proper divisors (863064501239).

1311643444041 is a wasteful number, since it uses less digits than its factorization.

1311643444041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90916125 (or 90916122 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The spelling of 1311643444041 in words is "one trillion, three hundred eleven billion, six hundred forty-three million, four hundred forty-four thousand, forty-one".