11243421140 has 72 divisors (see below), whose sum is σ = 27450511872. Its totient is φ = 3789385920.

The previous prime is 11243421107. The next prime is 11243421157. The reversal of 11243421140 is 4112434211.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 475805 + ... + 498875.

Almost surely, 2^11243421140 is an apocalyptic number.

11243421140 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 11243421140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13725255936).

11243421140 is an abundant number, since it is smaller than the sum of its proper divisors (16207090732).

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

11243421140 is a wasteful number, since it uses less digits than its factorization.

11243421140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23205 (or 23144 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 11243421140 its reverse (4112434211), we get a palindrome (15355855351).

The spelling of 11243421140 in words is "eleven billion, two hundred forty-three million, four hundred twenty-one thousand, one hundred forty".