13320143640 has 96 divisors (see below), whose sum is σ = 45172689120. Its totient is φ = 3397599744.

The previous prime is 13320143623. The next prime is 13320143651. The reversal of 13320143640 is 4634102331.

13320143640 is a `hidden beast` number, since 1 + 3 + 3 + 2 + 0 + 14 + 3 + 640 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 796077 + ... + 812636.

It is an arithmetic number, because the mean of its divisors is an integer number (470548845).

Almost surely, 2^13320143640 is an apocalyptic number.

13320143640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13320143640 is an abundant number, since it is smaller than the sum of its proper divisors (31852545480).

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

13320143640 is a wasteful number, since it uses less digits than its factorization.

13320143640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608753 (or 1608746 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 13320143640 its reverse (4634102331), we get a palindrome (17954245971).

The spelling of 13320143640 in words is "thirteen billion, three hundred twenty million, one hundred forty-three thousand, six hundred forty".