11513211206266 has 32 divisors (see below), whose sum is σ = 21536978337792. Its totient is φ = 4484462920560.

The previous prime is 11513211206257. The next prime is 11513211206293. The reversal of 11513211206266 is 66260211231511.

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 15 ways as a sum of consecutive naturals, for example, 9455706 + ... + 10603621.

It is an arithmetic number, because the mean of its divisors is an integer number (673030573056).

Almost surely, 2^{11513211206266} is an apocalyptic number.

11513211206266 is a deficient number, since it is larger than the sum of its proper divisors (10023767131526).

11513211206266 is a wasteful number, since it uses less digits than its factorization.

11513211206266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20063074.

The product of its (nonzero) digits is 25920, while the sum is 37.

Adding to 11513211206266 its reverse (66260211231511), we get a palindrome (77773422437777).

The spelling of 11513211206266 in words is "eleven trillion, five hundred thirteen billion, two hundred eleven million, two hundred six thousand, two hundred sixty-six".