520043545543 has 2 divisors, whose sum is σ = 520043545544. Its totient is φ = 520043545542.

The previous prime is 520043545529. The next prime is 520043545561. The reversal of 520043545543 is 345545340025.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 520043545543 - 2⁹ = 520043545031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 520043545496 and 520043545505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520043545513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260021772771 + 260021772772.

It is an arithmetic number, because the mean of its divisors is an integer number (260021772772).

Almost surely, 2^520043545543 is an apocalyptic number.

520043545543 is a deficient number, since it is larger than the sum of its proper divisors (1).

520043545543 is an equidigital number, since it uses as much as digits as its factorization.

520043545543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720000, while the sum is 40.

Adding to 520043545543 its reverse (345545340025), we get a palindrome (865588885568).

The spelling of 520043545543 in words is "five hundred twenty billion, forty-three million, five hundred forty-five thousand, five hundred forty-three".