4423021465543 has 2 divisors, whose sum is σ = 4423021465544. Its totient is φ = 4423021465542.

The previous prime is 4423021465537. The next prime is 4423021465579. The reversal of 4423021465543 is 3455641203244.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4423021465543 - 2¹⁷ = 4423021334471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4423021465543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4423021465843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2211510732771 + 2211510732772.

It is an arithmetic number, because the mean of its divisors is an integer number (2211510732772).

Almost surely, 2^{4423021465543} is an apocalyptic number.

4423021465543 is a deficient number, since it is larger than the sum of its proper divisors (1).

4423021465543 is an equidigital number, since it uses as much as digits as its factorization.

4423021465543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1382400, while the sum is 43.

Adding to 4423021465543 its reverse (3455641203244), we get a palindrome (7878662668787).

The spelling of 4423021465543 in words is "four trillion, four hundred twenty-three billion, twenty-one million, four hundred sixty-five thousand, five hundred forty-three".