13521133044 has 36 divisors (see below), whose sum is σ = 34215694240. Its totient is φ = 4502129040.

The previous prime is 13521133037. The next prime is 13521133049. The reversal of 13521133044 is 44033112531.

It is a happy number.

13521133044 is a `hidden beast` number, since 1 + 3 + 521 + 133 + 0 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 13521132999 and 13521133017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13521133049) 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 11 ways as a sum of consecutive naturals, for example, 171262 + ... + 237429.

Almost surely, 2^13521133044 is an apocalyptic number.

It is an amenable number.

13521133044 is an abundant number, since it is smaller than the sum of its proper divisors (20694561196).

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

13521133044 is a wasteful number, since it uses less digits than its factorization.

13521133044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409620 (or 409615 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 13521133044 its reverse (44033112531), we get a palindrome (57554245575).

The spelling of 13521133044 in words is "thirteen billion, five hundred twenty-one million, one hundred thirty-three thousand, forty-four".