13531044256 has 96 divisors (see below), whose sum is σ = 29333404800. Its totient is φ = 6115507200.

The previous prime is 13531044253. The next prime is 13531044323. The reversal of 13531044256 is 65244013531.

It is not an unprimeable number, because it can be changed into a prime (13531044251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7116906 + ... + 7118806.

It is an arithmetic number, because the mean of its divisors is an integer number (305556300).

Almost surely, 2^13531044256 is an apocalyptic number.

13531044256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13531044256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14666702400).

13531044256 is an abundant number, since it is smaller than the sum of its proper divisors (15802360544).

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

13531044256 is a wasteful number, since it uses less digits than its factorization.

13531044256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2462 (or 2454 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 13531044256 its reverse (65244013531), we get a palindrome (78775057787).

The spelling of 13531044256 in words is "thirteen billion, five hundred thirty-one million, forty-four thousand, two hundred fifty-six".