13520320252 has 12 divisors (see below), whose sum is σ = 25052358240. Its totient is φ = 6362503616.

The previous prime is 13520320223. The next prime is 13520320267. The reversal of 13520320252 is 25202302531.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99414052 + ... + 99414187.

It is an arithmetic number, because the mean of its divisors is an integer number (2087696520).

Almost surely, 2^13520320252 is an apocalyptic number.

It is an amenable number.

13520320252 is a deficient number, since it is larger than the sum of its proper divisors (11532037988).

13520320252 is a wasteful number, since it uses less digits than its factorization.

13520320252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198828260 (or 198828258 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 13520320252 its reverse (25202302531), we get a palindrome (38722622783).

The spelling of 13520320252 in words is "thirteen billion, five hundred twenty million, three hundred twenty thousand, two hundred fifty-two".