11530322550 has 72 divisors (see below), whose sum is σ = 31370358240. Its totient is φ = 3035822400.

The previous prime is 11530322521. The next prime is 11530322569. The reversal of 11530322550 is 5522303511.

It is a happy number.

11530322550 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 35 ways as a sum of consecutive naturals, for example, 126621 + ... + 197720.

It is an arithmetic number, because the mean of its divisors is an integer number (435699420).

Almost surely, 2^11530322550 is an apocalyptic number.

11530322550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11530322550 is an abundant number, since it is smaller than the sum of its proper divisors (19840035690).

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

11530322550 is a wasteful number, since it uses less digits than its factorization.

11530322550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324438 (or 324430 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The spelling of 11530322550 in words is "eleven billion, five hundred thirty million, three hundred twenty-two thousand, five hundred fifty".