11543044400 has 60 divisors (see below), whose sum is σ = 27892632912. Its totient is φ = 4590501120.

The previous prime is 11543044397. The next prime is 11543044417. The reversal of 11543044400 is 444034511.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11543044400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14204 + ... + 152603.

Almost surely, 2^11543044400 is an apocalyptic number.

11543044400 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 11543044400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13946316456).

11543044400 is an abundant number, since it is smaller than the sum of its proper divisors (16349588512).

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

11543044400 is a wasteful number, since it uses less digits than its factorization.

11543044400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166998 (or 166987 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 11543044400 its reverse (444034511), we get a palindrome (11987078911).

The spelling of 11543044400 in words is "eleven billion, five hundred forty-three million, forty-four thousand, four hundred".