11550305128 has 24 divisors (see below), whose sum is σ = 22377979890. Its totient is φ = 5588853600.

The previous prime is 11550305111. The next prime is 11550305141. The reversal of 11550305128 is 82150305511.

11550305128 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 only one way, i.e., 10733374404 + 816930724 = 103602^2 + 28582^2 .

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a self number, because there is not a number n which added to its sum of digits gives 11550305128.

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 5 ways as a sum of consecutive naturals, for example, 743503 + ... + 758878.

Almost surely, 2^11550305128 is an apocalyptic number.

It is an amenable number.

11550305128 is a deficient number, since it is larger than the sum of its proper divisors (10827674762).

11550305128 is a wasteful number, since it uses less digits than its factorization.

11550305128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502449 (or 1502414 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 31.

The spelling of 11550305128 in words is "eleven billion, five hundred fifty million, three hundred five thousand, one hundred twenty-eight".