243220441656103 has 16 divisors (see below), whose sum is σ = 259179792520320. Its totient is φ = 227578497116256.

The previous prime is 243220441656097. The next prime is 243220441656187. The reversal of 243220441656103 is 301656144022342.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243220441656103 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243220441656103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243220441650103) 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, 16380025 + ... + 27472642.

It is an arithmetic number, because the mean of its divisors is an integer number (16198737032520).

Almost surely, 2^{243220441656103} is an apocalyptic number.

243220441656103 is a deficient number, since it is larger than the sum of its proper divisors (15959350864217).

243220441656103 is a wasteful number, since it uses less digits than its factorization.

243220441656103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43856286.

The product of its (nonzero) digits is 829440, while the sum is 43.

Adding to 243220441656103 its reverse (301656144022342), we get a palindrome (544876585678445).

The spelling of 243220441656103 in words is "two hundred forty-three trillion, two hundred twenty billion, four hundred forty-one million, six hundred fifty-six thousand, one hundred three".