13201620104509 has 2 divisors, whose sum is σ = 13201620104510. Its totient is φ = 13201620104508.

The previous prime is 13201620104489. The next prime is 13201620104521. The reversal of 13201620104509 is 90540102610231.

13201620104509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6638852100409 + 6562768004100 = 2576597^2 + 2561790^2 .

It is a cyclic number.

It is not a de Polignac number, because 13201620104509 - 2³⁷ = 13064181151037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13201620104609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6600810052254 + 6600810052255.

It is an arithmetic number, because the mean of its divisors is an integer number (6600810052255).

Almost surely, 2^{13201620104509} is an apocalyptic number.

It is an amenable number.

13201620104509 is a deficient number, since it is larger than the sum of its proper divisors (1).

13201620104509 is an equidigital number, since it uses as much as digits as its factorization.

13201620104509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 34.

The spelling of 13201620104509 in words is "thirteen trillion, two hundred one billion, six hundred twenty million, one hundred four thousand, five hundred nine".