21443344314 has 128 divisors (see below), whose sum is σ = 53658132480. Its totient is φ = 5578003200.

The previous prime is 21443344271. The next prime is 21443344331. The reversal of 21443344314 is 41344334412.

It is a super-2 number, since 2×21443344314² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1983604 + ... + 1994384.

It is an arithmetic number, because the mean of its divisors is an integer number (419204160).

Almost surely, 2^21443344314 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21443344314, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26829066240).

21443344314 is an abundant number, since it is smaller than the sum of its proper divisors (32214788166).

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

21443344314 is a wasteful number, since it uses less digits than its factorization.

21443344314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10916.

The product of its digits is 55296, while the sum is 33.

Adding to 21443344314 its reverse (41344334412), we get a palindrome (62787678726).

The spelling of 21443344314 in words is "twenty-one billion, four hundred forty-three million, three hundred forty-four thousand, three hundred fourteen".