11544533440 has 112 divisors (see below), whose sum is σ = 31023946080. Its totient is φ = 4053217280.

The previous prime is 11544533419. The next prime is 11544533471. The reversal of 11544533440 is 4433544511.

It is a junction number, because it is equal to n+sod(n) for n = 11544533396 and 11544533405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45534 + ... + 158626.

Almost surely, 2^11544533440 is an apocalyptic number.

11544533440 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 11544533440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15511973040).

11544533440 is an abundant number, since it is smaller than the sum of its proper divisors (19479412640).

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

11544533440 is a wasteful number, since it uses less digits than its factorization.

11544533440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113150 (or 113140 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

The spelling of 11544533440 in words is "eleven billion, five hundred forty-four million, five hundred thirty-three thousand, four hundred forty".