11544241920 has 144 divisors (see below), whose sum is σ = 38810163840. Its totient is φ = 2916421632.

The previous prime is 11544241897. The next prime is 11544241921. The reversal of 11544241920 is 2914244511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11544241921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6154 + ... + 152073.

Almost surely, 2^11544241920 is an apocalyptic number.

11544241920 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 11544241920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19405081920).

11544241920 is an abundant number, since it is smaller than the sum of its proper divisors (27265921920).

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

11544241920 is a wasteful number, since it uses less digits than its factorization.

11544241920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158270 (or 158256 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 11544241920 in words is "eleven billion, five hundred forty-four million, two hundred forty-one thousand, nine hundred twenty".