11131266506 has 16 divisors (see below), whose sum is σ = 17102080800. Its totient is φ = 5431930608.

The previous prime is 11131266493. The next prime is 11131266551. The reversal of 11131266506 is 60566213111.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322925 + ... + 355728.

It is an arithmetic number, because the mean of its divisors is an integer number (1068880050).

Almost surely, 2^11131266506 is an apocalyptic number.

11131266506 is a deficient number, since it is larger than the sum of its proper divisors (5970814294).

11131266506 is a wasteful number, since it uses less digits than its factorization.

11131266506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678853.

The product of its (nonzero) digits is 6480, while the sum is 32.

Adding to 11131266506 its reverse (60566213111), we get a palindrome (71697479617).

The spelling of 11131266506 in words is "eleven billion, one hundred thirty-one million, two hundred sixty-six thousand, five hundred six".