1311113545533 has 48 divisors (see below), whose sum is σ = 2086870893120. Its totient is φ = 786589056000.

The previous prime is 1311113545523. The next prime is 1311113545537. The reversal of 1311113545533 is 3355453111131.

1311113545533 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 113 + 5 + 4 + 5 + 533 = 666.

It is not a de Polignac number, because 1311113545533 - 2⁴ = 1311113545517 is a prime.

It is a super-2 number, since 2×1311113545533² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311113545537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66873510 + ... + 66893112.

It is an arithmetic number, because the mean of its divisors is an integer number (43476476940).

Almost surely, 2^{1311113545533} is an apocalyptic number.

It is an amenable number.

1311113545533 is a deficient number, since it is larger than the sum of its proper divisors (775757347587).

1311113545533 is a wasteful number, since it uses less digits than its factorization.

1311113545533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26410 (or 26407 counting only the distinct ones).

The product of its digits is 40500, while the sum is 36.

Adding to 1311113545533 its reverse (3355453111131), we get a palindrome (4666566656664).

The spelling of 1311113545533 in words is "one trillion, three hundred eleven billion, one hundred thirteen million, five hundred forty-five thousand, five hundred thirty-three".