13531202438 has 16 divisors (see below), whose sum is σ = 22448857200. Its totient is φ = 6076381536.

The previous prime is 13531202383. The next prime is 13531202449. The reversal of 13531202438 is 83420213531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7031888 + ... + 7033811.

It is an arithmetic number, because the mean of its divisors is an integer number (1403053575).

Almost surely, 2^13531202438 is an apocalyptic number.

13531202438 is a deficient number, since it is larger than the sum of its proper divisors (8917654762).

13531202438 is a wasteful number, since it uses less digits than its factorization.

13531202438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14065751.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 13531202438 its reverse (83420213531), we get a palindrome (96951415969).

The spelling of 13531202438 in words is "thirteen billion, five hundred thirty-one million, two hundred two thousand, four hundred thirty-eight".