13066543481 has 2 divisors, whose sum is σ = 13066543482. Its totient is φ = 13066543480.

The previous prime is 13066543411. The next prime is 13066543489. The reversal of 13066543481 is 18434566031.

13066543481 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., 13055119081 + 11424400 = 114259^2 + 3380^2 .

It is a cyclic number.

It is not a de Polignac number, because 13066543481 - 2¹⁸ = 13066281337 is a prime.

It is a super-2 number, since 2×13066543481² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13066543489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6533271740 + 6533271741.

It is an arithmetic number, because the mean of its divisors is an integer number (6533271741).

Almost surely, 2^13066543481 is an apocalyptic number.

It is an amenable number.

13066543481 is a deficient number, since it is larger than the sum of its proper divisors (1).

13066543481 is an equidigital number, since it uses as much as digits as its factorization.

13066543481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 13066543481 in words is "thirteen billion, sixty-six million, five hundred forty-three thousand, four hundred eighty-one".