13531444424 has 8 divisors (see below), whose sum is σ = 25371458310. Its totient is φ = 6765722208.

The previous prime is 13531444411. The next prime is 13531444447. The reversal of 13531444424 is 42444413531.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11726724100 + 1804720324 = 108290^2 + 42482^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 845715269 + ... + 845715284.

Almost surely, 2^13531444424 is an apocalyptic number.

It is an amenable number.

13531444424 is a deficient number, since it is larger than the sum of its proper divisors (11840013886).

13531444424 is a wasteful number, since it uses less digits than its factorization.

13531444424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691430559 (or 1691430555 counting only the distinct ones).

The product of its digits is 92160, while the sum is 35.

Adding to 13531444424 its reverse (42444413531), we get a palindrome (55975857955).

The spelling of 13531444424 in words is "thirteen billion, five hundred thirty-one million, four hundred forty-four thousand, four hundred twenty-four".