13451033450321 has 2 divisors, whose sum is σ = 13451033450322. Its totient is φ = 13451033450320.

The previous prime is 13451033450317. The next prime is 13451033450339. The reversal of 13451033450321 is 12305433015431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13451025694096 + 7756225 = 3667564^2 + 2785^2 .

It is an emirp because it is prime and its reverse (12305433015431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13451033450321 - 2² = 13451033450317 is a prime.

It is not a weakly prime, because it can be changed into another prime (13451033450341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6725516725160 + 6725516725161.

It is an arithmetic number, because the mean of its divisors is an integer number (6725516725161).

Almost surely, 2^{13451033450321} is an apocalyptic number.

It is an amenable number.

13451033450321 is a deficient number, since it is larger than the sum of its proper divisors (1).

13451033450321 is an equidigital number, since it uses as much as digits as its factorization.

13451033450321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 35.

Adding to 13451033450321 its reverse (12305433015431), we get a palindrome (25756466465752).

The spelling of 13451033450321 in words is "thirteen trillion, four hundred fifty-one billion, thirty-three million, four hundred fifty thousand, three hundred twenty-one".