13531133044 has 36 divisors (see below), whose sum is σ = 27972120960. Its totient is φ = 5677395360.

The previous prime is 13531133039. The next prime is 13531133087. The reversal of 13531133044 is 44033113531.

It is a super-2 number, since 2×13531133044² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 902404 + ... + 917275.

It is an arithmetic number, because the mean of its divisors is an integer number (777003360).

Almost surely, 2^13531133044 is an apocalyptic number.

It is an amenable number.

13531133044 is an abundant number, since it is smaller than the sum of its proper divisors (14440987916).

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

13531133044 is a wasteful number, since it uses less digits than its factorization.

13531133044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819720 (or 1819705 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 13531133044 its reverse (44033113531), we get a palindrome (57564246575).

The spelling of 13531133044 in words is "thirteen billion, five hundred thirty-one million, one hundred thirty-three thousand, forty-four".