13266201281 has 2 divisors, whose sum is σ = 13266201282. Its totient is φ = 13266201280.

The previous prime is 13266201259. The next prime is 13266201317. The reversal of 13266201281 is 18210266231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9309162256 + 3957039025 = 96484^2 + 62905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13266201281 is a prime.

It is a super-4 number, since 4×13266201281⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (13266201251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6633100640 + 6633100641.

It is an arithmetic number, because the mean of its divisors is an integer number (6633100641).

Almost surely, 2^13266201281 is an apocalyptic number.

It is an amenable number.

13266201281 is a deficient number, since it is larger than the sum of its proper divisors (1).

13266201281 is an equidigital number, since it uses as much as digits as its factorization.

13266201281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 13266201281 in words is "thirteen billion, two hundred sixty-six million, two hundred one thousand, two hundred eighty-one".