4431243111543 has 24 divisors (see below), whose sum is σ = 6580829496800. Its totient is φ = 2871191997504.

The previous prime is 4431243111541. The next prime is 4431243111577. The reversal of 4431243111543 is 3451113421344.

4431243111543 is a `hidden beast` number, since 44 + 31 + 2 + 4 + 31 + 11 + 543 = 666.

It is not a de Polignac number, because 4431243111543 - 2¹ = 4431243111541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4431243111498 and 4431243111507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4431243111541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6933928 + ... + 7545981.

Almost surely, 2^{4431243111543} is an apocalyptic number.

4431243111543 is a deficient number, since it is larger than the sum of its proper divisors (2149586385257).

4431243111543 is a wasteful number, since it uses less digits than its factorization.

4431243111543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14480871 (or 14480868 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

Adding to 4431243111543 its reverse (3451113421344), we get a palindrome (7882356532887).

The spelling of 4431243111543 in words is "four trillion, four hundred thirty-one billion, two hundred forty-three million, one hundred eleven thousand, five hundred forty-three".