13320339397 has 2 divisors, whose sum is σ = 13320339398. Its totient is φ = 13320339396.

The previous prime is 13320339287. The next prime is 13320339413. The reversal of 13320339397 is 79393302331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13134535236 + 185804161 = 114606^2 + 13631^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13320339397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13320331397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6660169698 + 6660169699.

It is an arithmetic number, because the mean of its divisors is an integer number (6660169699).

Almost surely, 2^13320339397 is an apocalyptic number.

It is an amenable number.

13320339397 is a deficient number, since it is larger than the sum of its proper divisors (1).

13320339397 is an equidigital number, since it uses as much as digits as its factorization.

13320339397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 275562, while the sum is 43.

The spelling of 13320339397 in words is "thirteen billion, three hundred twenty million, three hundred thirty-nine thousand, three hundred ninety-seven".