13645132216 has 16 divisors (see below), whose sum is σ = 25681906800. Its totient is φ = 6796623744.

The previous prime is 13645132211. The next prime is 13645132217. The reversal of 13645132216 is 61223154631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13645132211) 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, 3240561 + ... + 3244768.

It is an arithmetic number, because the mean of its divisors is an integer number (1605119175).

Almost surely, 2^13645132216 is an apocalyptic number.

It is an amenable number.

13645132216 is a deficient number, since it is larger than the sum of its proper divisors (12036774584).

13645132216 is a wasteful number, since it uses less digits than its factorization.

13645132216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6485598 (or 6485594 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

Adding to 13645132216 its reverse (61223154631), we get a palindrome (74868286847).

The spelling of 13645132216 in words is "thirteen billion, six hundred forty-five million, one hundred thirty-two thousand, two hundred sixteen".