13530353281 has 2 divisors, whose sum is σ = 13530353282. Its totient is φ = 13530353280.

The previous prime is 13530353231. The next prime is 13530353299. The reversal of 13530353281 is 18235303531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12759735681 + 770617600 = 112959^2 + 27760^2 .

It is a cyclic number.

It is not a de Polignac number, because 13530353281 - 2⁷ = 13530353153 is a prime.

It is a super-2 number, since 2×13530353281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13530353231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765176640 + 6765176641.

It is an arithmetic number, because the mean of its divisors is an integer number (6765176641).

Almost surely, 2^13530353281 is an apocalyptic number.

It is an amenable number.

13530353281 is a deficient number, since it is larger than the sum of its proper divisors (1).

13530353281 is an equidigital number, since it uses as much as digits as its factorization.

13530353281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 34.

The spelling of 13530353281 in words is "thirteen billion, five hundred thirty million, three hundred fifty-three thousand, two hundred eighty-one".