13521444412532 has 12 divisors (see below), whose sum is σ = 27042888825120. Its totient is φ = 5794904748216.

The previous prime is 13521444412507. The next prime is 13521444412573. The reversal of 13521444412532 is 23521444412531.

13521444412532 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 13521444412532.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241454364482 + ... + 241454364537.

It is an arithmetic number, because the mean of its divisors is an integer number (2253574068760).

Almost surely, 2^{13521444412532} is an apocalyptic number.

It is an amenable number.

13521444412532 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13521444412532 is a wasteful number, since it uses less digits than its factorization.

13521444412532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482908729030 (or 482908729028 counting only the distinct ones).

The product of its digits is 460800, while the sum is 41.

Subtracting 13521444412532 from its reverse (23521444412531), we obtain a palindrome (9999999999999).

The spelling of 13521444412532 in words is "thirteen trillion, five hundred twenty-one billion, four hundred forty-four million, four hundred twelve thousand, five hundred thirty-two".