13321001320399 has 2 divisors, whose sum is σ = 13321001320400. Its totient is φ = 13321001320398.

The previous prime is 13321001320391. The next prime is 13321001320453. The reversal of 13321001320399 is 99302310012331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13321001320399 - 2³ = 13321001320391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13321001320391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6660500660199 + 6660500660200.

It is an arithmetic number, because the mean of its divisors is an integer number (6660500660200).

Almost surely, 2^{13321001320399} is an apocalyptic number.

13321001320399 is a deficient number, since it is larger than the sum of its proper divisors (1).

13321001320399 is an equidigital number, since it uses as much as digits as its factorization.

13321001320399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26244, while the sum is 37.

The spelling of 13321001320399 in words is "thirteen trillion, three hundred twenty-one billion, one million, three hundred twenty thousand, three hundred ninety-nine".