21441130304 has 84 divisors (see below), whose sum is σ = 47105620800. Its totient is φ = 9675367680.

The previous prime is 21441130297. The next prime is 21441130331. The reversal of 21441130304 is 40303114412.

It is a self number, because there is not a number n which added to its sum of digits gives 21441130304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1066457 + ... + 1086375.

It is an arithmetic number, because the mean of its divisors is an integer number (560781200).

Almost surely, 2^21441130304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21441130304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23552810400).

21441130304 is an abundant number, since it is smaller than the sum of its proper divisors (25664490496).

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

21441130304 is a wasteful number, since it uses less digits than its factorization.

21441130304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20092 (or 20071 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21441130304 its reverse (40303114412), we get a palindrome (61744244716).

The spelling of 21441130304 in words is "twenty-one billion, four hundred forty-one million, one hundred thirty thousand, three hundred four".