11128712912 has 20 divisors (see below), whose sum is σ = 21651357156. Its totient is φ = 5541265920.

The previous prime is 11128712891. The next prime is 11128712921. The reversal of 11128712912 is 21921782111.

11128712912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4638154816 + 6490558096 = 68104^2 + 80564^2 .

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 3 ways as a sum of consecutive naturals, for example, 1439183 + ... + 1446894.

Almost surely, 2^11128712912 is an apocalyptic number.

It is an amenable number.

11128712912 is a deficient number, since it is larger than the sum of its proper divisors (10522644244).

11128712912 is a wasteful number, since it uses less digits than its factorization.

11128712912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2886326 (or 2886320 counting only the distinct ones).

The product of its digits is 4032, while the sum is 35.

The spelling of 11128712912 in words is "eleven billion, one hundred twenty-eight million, seven hundred twelve thousand, nine hundred twelve".