21944444104 has 64 divisors (see below), whose sum is σ = 46037678400. Its totient is φ = 9719500800.

The previous prime is 21944444099. The next prime is 21944444107. The reversal of 21944444104 is 40144444912.

It is not an unprimeable number, because it can be changed into a prime (21944444107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3348559 + ... + 3355105.

It is an arithmetic number, because the mean of its divisors is an integer number (719338725).

Almost surely, 2^21944444104 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 21944444104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23018839200).

21944444104 is an abundant number, since it is smaller than the sum of its proper divisors (24093234296).

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

21944444104 is a wasteful number, since it uses less digits than its factorization.

21944444104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7534 (or 7530 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 37.

The spelling of 21944444104 in words is "twenty-one billion, nine hundred forty-four million, four hundred forty-four thousand, one hundred four".