13531443505 has 16 divisors (see below), whose sum is σ = 17410533120. Its totient is φ = 10059409152.

The previous prime is 13531443407. The next prime is 13531443577. The reversal of 13531443505 is 50534413531.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13531443505 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1000839 + ... + 1014268.

It is an arithmetic number, because the mean of its divisors is an integer number (1088158320).

Almost surely, 2^13531443505 is an apocalyptic number.

It is an amenable number.

13531443505 is a deficient number, since it is larger than the sum of its proper divisors (3879089615).

13531443505 is a wasteful number, since it uses less digits than its factorization.

13531443505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015208.

The product of its (nonzero) digits is 54000, while the sum is 34.

The spelling of 13531443505 in words is "thirteen billion, five hundred thirty-one million, four hundred forty-three thousand, five hundred five".