11503236432 has 80 divisors (see below), whose sum is σ = 30194620992. Its totient is φ = 3772876800.

The previous prime is 11503236403. The next prime is 11503236449. The reversal of 11503236432 is 23463230511.

11503236432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 11503236432.

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 15 ways as a sum of consecutive naturals, for example, 4105432 + ... + 4108232.

Almost surely, 2^11503236432 is an apocalyptic number.

11503236432 is a gapful number since it is divisible by the number (12) 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 11503236432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15097310496).

11503236432 is an abundant number, since it is smaller than the sum of its proper divisors (18691384560).

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

11503236432 is a wasteful number, since it uses less digits than its factorization.

11503236432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4156 (or 4150 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 11503236432 its reverse (23463230511), we get a palindrome (34966466943).

The spelling of 11503236432 in words is "eleven billion, five hundred three million, two hundred thirty-six thousand, four hundred thirty-two".