13531202447 has 16 divisors (see below), whose sum is σ = 15517341504. Its totient is φ = 11558400000.

The previous prime is 13531202383. The next prime is 13531202449. The reversal of 13531202447 is 74420213531.

13531202447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13531202447 - 2⁶ = 13531202383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531202449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4829447 + ... + 4832247.

It is an arithmetic number, because the mean of its divisors is an integer number (969833844).

Almost surely, 2^13531202447 is an apocalyptic number.

13531202447 is a deficient number, since it is larger than the sum of its proper divisors (1986139057).

13531202447 is a wasteful number, since it uses less digits than its factorization.

13531202447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4930.

The product of its (nonzero) digits is 20160, while the sum is 32.

Adding to 13531202447 its reverse (74420213531), we get a palindrome (87951415978).

The spelling of 13531202447 in words is "thirteen billion, five hundred thirty-one million, two hundred two thousand, four hundred forty-seven".