11243543000 has 64 divisors (see below), whose sum is σ = 26329605120. Its totient is φ = 4494048000.

The previous prime is 11243542979. The next prime is 11243543033. The reversal of 11243543000 is 34534211.

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, 1659620 + ... + 1666380.

It is an arithmetic number, because the mean of its divisors is an integer number (411400080).

Almost surely, 2^11243543000 is an apocalyptic number.

11243543000 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 11243543000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13164802560).

11243543000 is an abundant number, since it is smaller than the sum of its proper divisors (15086062120).

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

11243543000 is a wasteful number, since it uses less digits than its factorization.

11243543000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8445 (or 8431 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The spelling of 11243543000 in words is "eleven billion, two hundred forty-three million, five hundred forty-three thousand".