11131265266 has 16 divisors (see below), whose sum is σ = 18358225920. Its totient is φ = 5019824880.

The previous prime is 11131265237. The next prime is 11131265281. The reversal of 11131265266 is 66256213111.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1989201 + ... + 1994788.

It is an arithmetic number, because the mean of its divisors is an integer number (1147389120).

Almost surely, 2^11131265266 is an apocalyptic number.

11131265266 is a deficient number, since it is larger than the sum of its proper divisors (7226960654).

11131265266 is a wasteful number, since it uses less digits than its factorization.

11131265266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3984129.

The product of its digits is 12960, while the sum is 34.

Adding to 11131265266 its reverse (66256213111), we get a palindrome (77387478377).

The spelling of 11131265266 in words is "eleven billion, one hundred thirty-one million, two hundred sixty-five thousand, two hundred sixty-six".