6442832217543 has 4 divisors (see below), whose sum is σ = 8590442956728. Its totient is φ = 4295221478360.

The previous prime is 6442832217529. The next prime is 6442832217551. The reversal of 6442832217543 is 3457122382446.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6442832217543 - 2¹⁰ = 6442832216519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442832217553) 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, 1073805369588 + ... + 1073805369593.

It is an arithmetic number, because the mean of its divisors is an integer number (2147610739182).

Almost surely, 2^{6442832217543} is an apocalyptic number.

6442832217543 is a deficient number, since it is larger than the sum of its proper divisors (2147610739185).

6442832217543 is a wasteful number, since it uses less digits than its factorization.

6442832217543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2147610739184.

The product of its digits is 7741440, while the sum is 51.

Adding to 6442832217543 its reverse (3457122382446), we get a palindrome (9899954599989).

The spelling of 6442832217543 in words is "six trillion, four hundred forty-two billion, eight hundred thirty-two million, two hundred seventeen thousand, five hundred forty-three".