11218866428 has 24 divisors (see below), whose sum is σ = 24477527424. Its totient is φ = 4370986800.

The previous prime is 11218866397. The next prime is 11218866443. The reversal of 11218866428 is 82466881211.

It is a happy number.

11218866428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 18212138 + ... + 18212753.

It is an arithmetic number, because the mean of its divisors is an integer number (1019896976).

Almost surely, 2^11218866428 is an apocalyptic number.

It is an amenable number.

11218866428 is an abundant number, since it is smaller than the sum of its proper divisors (13258660996).

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

11218866428 is a wasteful number, since it uses less digits than its factorization.

11218866428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36424913 (or 36424911 counting only the distinct ones).

The product of its digits is 294912, while the sum is 47.

The spelling of 11218866428 in words is "eleven billion, two hundred eighteen million, eight hundred sixty-six thousand, four hundred twenty-eight".