11045558865 has 16 divisors (see below), whose sum is σ = 19279521216. Its totient is φ = 5355422400.

The previous prime is 11045558851. The next prime is 11045558873. The reversal of 11045558865 is 56885554011.

11045558865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11045558865 - 2¹² = 11045554769 is a prime.

It is an unprimeable number.

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, 33471226 + ... + 33471555.

It is an arithmetic number, because the mean of its divisors is an integer number (1204970076).

Almost surely, 2^11045558865 is an apocalyptic number.

11045558865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11045558865 is a deficient number, since it is larger than the sum of its proper divisors (8233962351).

11045558865 is a wasteful number, since it uses less digits than its factorization.

11045558865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66942800.

The product of its (nonzero) digits is 960000, while the sum is 48.

The spelling of 11045558865 in words is "eleven billion, forty-five million, five hundred fifty-eight thousand, eight hundred sixty-five".