13305994504321 has 4 divisors (see below), whose sum is σ = 13306001950144. Its totient is φ = 13305987058500.

The previous prime is 13305994504259. The next prime is 13305994504333. The reversal of 13305994504321 is 12340549950331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13305994504321 - 2⁷ = 13305994504193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13305994501321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 744916 + ... + 5212186.

It is an arithmetic number, because the mean of its divisors is an integer number (3326500487536).

Almost surely, 2^{13305994504321} is an apocalyptic number.

It is an amenable number.

13305994504321 is a deficient number, since it is larger than the sum of its proper divisors (7445823).

13305994504321 is an equidigital number, since it uses as much as digits as its factorization.

13305994504321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7445822.

The product of its (nonzero) digits is 1749600, while the sum is 49.

The spelling of 13305994504321 in words is "thirteen trillion, three hundred five billion, nine hundred ninety-four million, five hundred four thousand, three hundred twenty-one".