21441003344 has 20 divisors (see below), whose sum is σ = 41544510624. Its totient is φ = 10719839328.

The previous prime is 21441003307. The next prime is 21441003403. The reversal of 21441003344 is 44330014412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322709 + ... + 383435.

Almost surely, 2^21441003344 is an apocalyptic number.

It is an amenable number.

21441003344 is a deficient number, since it is larger than the sum of its proper divisors (20103507280).

21441003344 is a wasteful number, since it uses less digits than its factorization.

21441003344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82802 (or 82796 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 21441003344 its reverse (44330014412), we get a palindrome (65771017756).

The spelling of 21441003344 in words is "twenty-one billion, four hundred forty-one million, three thousand, three hundred forty-four".