13606541324221 has 16 divisors (see below), whose sum is σ = 14359033140480. Its totient is φ = 12867486079360.

The previous prime is 13606541324179. The next prime is 13606541324231. The reversal of 13606541324221 is 12242314560631.

It is a cyclic number.

It is not a de Polignac number, because 13606541324221 - 2¹¹ = 13606541322173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13606541324231) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 21449031 + ... + 22074283.

It is an arithmetic number, because the mean of its divisors is an integer number (897439571280).

Almost surely, 2^{13606541324221} is an apocalyptic number.

It is an amenable number.

13606541324221 is a deficient number, since it is larger than the sum of its proper divisors (752491816259).

13606541324221 is a wasteful number, since it uses less digits than its factorization.

13606541324221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635996.

The product of its (nonzero) digits is 207360, while the sum is 40.

Adding to 13606541324221 its reverse (12242314560631), we get a palindrome (25848855884852).

The spelling of 13606541324221 in words is "thirteen trillion, six hundred six billion, five hundred forty-one million, three hundred twenty-four thousand, two hundred twenty-one".