13531202406 has 24 divisors (see below), whose sum is σ = 29381775384. Its totient is φ = 4500528480.

The previous prime is 13531202383. The next prime is 13531202449. The reversal of 13531202406 is 60420213531.

13531202406 is a `hidden beast` number, since 1 + 3 + 53 + 1 + 202 + 406 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 13531202406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 814240 + ... + 830691.

It is an arithmetic number, because the mean of its divisors is an integer number (1224240641).

Almost surely, 2^13531202406 is an apocalyptic number.

13531202406 is an abundant number, since it is smaller than the sum of its proper divisors (15850572978).

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

13531202406 is a wasteful number, since it uses less digits than its factorization.

13531202406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645396 (or 1645393 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 13531202406 its reverse (60420213531), we get a palindrome (73951415937).

The spelling of 13531202406 in words is "thirteen billion, five hundred thirty-one million, two hundred two thousand, four hundred six".