11685863133 has 24 divisors (see below), whose sum is σ = 19346578368. Its totient is φ = 6658379712.

The previous prime is 11685863131. The next prime is 11685863149. The reversal of 11685863133 is 33136858611.

11685863133 is a `hidden beast` number, since 1 + 1 + 6 + 8 + 5 + 8 + 631 + 3 + 3 = 666.

11685863133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11685863133 - 2¹ = 11685863131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11685863131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 245416 + ... + 289137.

It is an arithmetic number, because the mean of its divisors is an integer number (806107432).

Almost surely, 2^11685863133 is an apocalyptic number.

It is an amenable number.

11685863133 is a deficient number, since it is larger than the sum of its proper divisors (7660715235).

11685863133 is a wasteful number, since it uses less digits than its factorization.

11685863133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534913 (or 534910 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The spelling of 11685863133 in words is "eleven billion, six hundred eighty-five million, eight hundred sixty-three thousand, one hundred thirty-three".