13261666362266 has 16 divisors (see below), whose sum is σ = 22942856618880. Its totient is φ = 5631428441520.

The previous prime is 13261666362167. The next prime is 13261666362293. The reversal of 13261666362266 is 66226366616231.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4345236470 + ... + 4345239521.

It is an arithmetic number, because the mean of its divisors is an integer number (1433928538680).

Almost surely, 2^{13261666362266} is an apocalyptic number.

13261666362266 is a deficient number, since it is larger than the sum of its proper divisors (9681190256614).

13261666362266 is a wasteful number, since it uses less digits than its factorization.

13261666362266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8690476109.

The product of its digits is 20155392, while the sum is 56.

The spelling of 13261666362266 in words is "thirteen trillion, two hundred sixty-one billion, six hundred sixty-six million, three hundred sixty-two thousand, two hundred sixty-six".