324520421543 has 2 divisors, whose sum is σ = 324520421544. Its totient is φ = 324520421542.

The previous prime is 324520421531. The next prime is 324520421567. The reversal of 324520421543 is 345124025423.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 324520421543 - 2¹² = 324520417447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (324520421593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162260210771 + 162260210772.

It is an arithmetic number, because the mean of its divisors is an integer number (162260210772).

Almost surely, 2^324520421543 is an apocalyptic number.

324520421543 is a deficient number, since it is larger than the sum of its proper divisors (1).

324520421543 is an equidigital number, since it uses as much as digits as its factorization.

324520421543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 324520421543 its reverse (345124025423), we get a palindrome (669644446966).

The spelling of 324520421543 in words is "three hundred twenty-four billion, five hundred twenty million, four hundred twenty-one thousand, five hundred forty-three".