11019649128 has 32 divisors (see below), whose sum is σ = 27570739200. Its totient is φ = 3670334208.

The previous prime is 11019649111. The next prime is 11019649181. The reversal of 11019649128 is 82194691011.

It is a self number, because there is not a number n which added to its sum of digits gives 11019649128.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148801 + ... + 210192.

It is an arithmetic number, because the mean of its divisors is an integer number (861585600).

Almost surely, 2^11019649128 is an apocalyptic number.

It is an amenable number.

11019649128 is an abundant number, since it is smaller than the sum of its proper divisors (16551090072).

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

11019649128 is a wasteful number, since it uses less digits than its factorization.

11019649128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360281 (or 360277 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 42.

The spelling of 11019649128 in words is "eleven billion, nineteen million, six hundred forty-nine thousand, one hundred twenty-eight".