13424505430321 has 2 divisors, whose sum is σ = 13424505430322. Its totient is φ = 13424505430320.

The previous prime is 13424505430319. The next prime is 13424505430327. The reversal of 13424505430321 is 12303450542431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12845629446400 + 578875983921 = 3584080^2 + 760839^2 .

It is a cyclic number.

It is not a de Polignac number, because 13424505430321 - 2¹ = 13424505430319 is a prime.

Together with 13424505430319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13424505430327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6712252715160 + 6712252715161.

It is an arithmetic number, because the mean of its divisors is an integer number (6712252715161).

Almost surely, 2^{13424505430321} is an apocalyptic number.

It is an amenable number.

13424505430321 is a deficient number, since it is larger than the sum of its proper divisors (1).

13424505430321 is an equidigital number, since it uses as much as digits as its factorization.

13424505430321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 13424505430321 its reverse (12303450542431), we get a palindrome (25727955972752).

The spelling of 13424505430321 in words is "thirteen trillion, four hundred twenty-four billion, five hundred five million, four hundred thirty thousand, three hundred twenty-one".