13543221353320 has 16 divisors (see below), whose sum is σ = 30472248045060. Its totient is φ = 5417288541312.

The previous prime is 13543221353297. The next prime is 13543221353323. The reversal of 13543221353320 is 2335312234531.

13543221353320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 13538823276196 + 4398077124 = 3679514^2 + 66318^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13543221353320.

It is not an unprimeable number, because it can be changed into a prime (13543221353323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169290266877 + ... + 169290266956.

Almost surely, 2^{13543221353320} is an apocalyptic number.

13543221353320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13543221353320 is an abundant number, since it is smaller than the sum of its proper divisors (16929026691740).

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

13543221353320 is a wasteful number, since it uses less digits than its factorization.

13543221353320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338580533844 (or 338580533840 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 37.

Adding to 13543221353320 its reverse (2335312234531), we get a palindrome (15878533587851).

The spelling of 13543221353320 in words is "thirteen trillion, five hundred forty-three billion, two hundred twenty-one million, three hundred fifty-three thousand, three hundred twenty".