11203133440 has 120 divisors (see below), whose sum is σ = 27083891520. Its totient is φ = 4448452608.

The previous prime is 11203133429. The next prime is 11203133453. The reversal of 11203133440 is 4433130211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13352541 + ... + 13353379.

It is an arithmetic number, because the mean of its divisors is an integer number (225699096).

Almost surely, 2^11203133440 is an apocalyptic number.

11203133440 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 11203133440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13541945760).

11203133440 is an abundant number, since it is smaller than the sum of its proper divisors (15880758080).

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

11203133440 is an frugal number, since it uses more digits than its factorization.

11203133440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035 (or 1009 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 11203133440 its reverse (4433130211), we get a palindrome (15636263651).

The spelling of 11203133440 in words is "eleven billion, two hundred three million, one hundred thirty-three thousand, four hundred forty".