11532144520 has 128 divisors (see below), whose sum is σ = 28525271040. Its totient is φ = 4170101760.

The previous prime is 11532144517. The next prime is 11532144521. The reversal of 11532144520 is 2544123511.

It is not an unprimeable number, because it can be changed into a prime (11532144521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6653574 + ... + 6655306.

It is an arithmetic number, because the mean of its divisors is an integer number (222853680).

Almost surely, 2^11532144520 is an apocalyptic number.

11532144520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11532144520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14262635520).

11532144520 is an abundant number, since it is smaller than the sum of its proper divisors (16993126520).

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

11532144520 is a wasteful number, since it uses less digits than its factorization.

11532144520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015 (or 2011 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The spelling of 11532144520 in words is "eleven billion, five hundred thirty-two million, one hundred forty-four thousand, five hundred twenty".