503521204323343 has 2 divisors, whose sum is σ = 503521204323344. Its totient is φ = 503521204323342.

The previous prime is 503521204323341. The next prime is 503521204323419. The reversal of 503521204323343 is 343323402125305.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 503521204323343 - 2¹ = 503521204323341 is a prime.

Together with 503521204323341, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 503521204323296 and 503521204323305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503521204323341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251760602161671 + 251760602161672.

It is an arithmetic number, because the mean of its divisors is an integer number (251760602161672).

Almost surely, 2^{503521204323343} is an apocalyptic number.

503521204323343 is a deficient number, since it is larger than the sum of its proper divisors (1).

503521204323343 is an equidigital number, since it uses as much as digits as its factorization.

503521204323343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 40.

Adding to 503521204323343 its reverse (343323402125305), we get a palindrome (846844606448648).

The spelling of 503521204323343 in words is "five hundred three trillion, five hundred twenty-one billion, two hundred four million, three hundred twenty-three thousand, three hundred forty-three".