216543887843613 has 16 divisors (see below), whose sum is σ = 325834063214400. Its totient is φ = 126713246804480.

The previous prime is 216543887843611. The next prime is 216543887843617. The reversal of 216543887843613 is 316348788345612.

It is a cyclic number.

It is not a de Polignac number, because 216543887843613 - 2¹ = 216543887843611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216543887843611) 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, 113136826548 + ... + 113136828461.

It is an arithmetic number, because the mean of its divisors is an integer number (20364628950900).

Almost surely, 2^{216543887843613} is an apocalyptic number.

It is an amenable number.

216543887843613 is a deficient number, since it is larger than the sum of its proper divisors (109290175370787).

216543887843613 is a wasteful number, since it uses less digits than its factorization.

216543887843613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226273655052.

The product of its digits is 557383680, while the sum is 69.

The spelling of 216543887843613 in words is "two hundred sixteen trillion, five hundred forty-three billion, eight hundred eighty-seven million, eight hundred forty-three thousand, six hundred thirteen".