13305552217 has 2 divisors, whose sum is σ = 13305552218. Its totient is φ = 13305552216.

The previous prime is 13305552209. The next prime is 13305552251. The reversal of 13305552217 is 71225550331.

It is an a-pointer prime, because the next prime (13305552251) can be obtained adding 13305552217 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12782789721 + 522762496 = 113061^2 + 22864^2 .

It is a cyclic number.

It is not a de Polignac number, because 13305552217 - 2³ = 13305552209 is a prime.

It is not a weakly prime, because it can be changed into another prime (13305550217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6652776108 + 6652776109.

It is an arithmetic number, because the mean of its divisors is an integer number (6652776109).

Almost surely, 2^13305552217 is an apocalyptic number.

It is an amenable number.

13305552217 is a deficient number, since it is larger than the sum of its proper divisors (1).

13305552217 is an equidigital number, since it uses as much as digits as its factorization.

13305552217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31500, while the sum is 34.

The spelling of 13305552217 in words is "thirteen billion, three hundred five million, five hundred fifty-two thousand, two hundred seventeen".