13226180861 has 2 divisors, whose sum is σ = 13226180862. Its totient is φ = 13226180860.

The previous prime is 13226180837. The next prime is 13226180873. The reversal of 13226180861 is 16808162231.

13226180861 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., 12028605625 + 1197575236 = 109675^2 + 34606^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13226180861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13226180161) 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, 6613090430 + 6613090431.

It is an arithmetic number, because the mean of its divisors is an integer number (6613090431).

Almost surely, 2^13226180861 is an apocalyptic number.

It is an amenable number.

13226180861 is a deficient number, since it is larger than the sum of its proper divisors (1).

13226180861 is an equidigital number, since it uses as much as digits as its factorization.

13226180861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 38.

The spelling of 13226180861 in words is "thirteen billion, two hundred twenty-six million, one hundred eighty thousand, eight hundred sixty-one".