13320253632 has 112 divisors (see below), whose sum is σ = 40307597312. Its totient is φ = 3802982400.

The previous prime is 13320253621. The next prime is 13320253637. The reversal of 13320253632 is 23635202331.

It is a tau number, because it is divible by the number of its divisors (112).

It is a self number, because there is not a number n which added to its sum of digits gives 13320253632.

It is not an unprimeable number, because it can be changed into a prime (13320253637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2417793 + ... + 2423295.

Almost surely, 2^13320253632 is an apocalyptic number.

13320253632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13320253632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20153798656).

13320253632 is an abundant number, since it is smaller than the sum of its proper divisors (26987343680).

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

13320253632 is a wasteful number, since it uses less digits than its factorization.

13320253632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7326 (or 7316 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 30.

Adding to 13320253632 its reverse (23635202331), we get a palindrome (36955455963).

The spelling of 13320253632 in words is "thirteen billion, three hundred twenty million, two hundred fifty-three thousand, six hundred thirty-two".