11365278666 has 32 divisors (see below), whose sum is σ = 25989387648. Its totient is φ = 3245771520.

The previous prime is 11365278653. The next prime is 11365278667. The reversal of 11365278666 is 66687256311.

11365278666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11365278667) 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 in 15 ways as a sum of consecutive naturals, for example, 36486 + ... + 155118.

It is an arithmetic number, because the mean of its divisors is an integer number (812168364).

Almost surely, 2^11365278666 is an apocalyptic number.

11365278666 is an abundant number, since it is smaller than the sum of its proper divisors (14624108982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11365278666 is a wasteful number, since it uses less digits than its factorization.

11365278666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120926.

The product of its digits is 2177280, while the sum is 51.

The spelling of 11365278666 in words is "eleven billion, three hundred sixty-five million, two hundred seventy-eight thousand, six hundred sixty-six".