21450044424330 has 128 divisors (see below), whose sum is σ = 58263958368000. Its totient is φ = 5614034745600.

The previous prime is 21450044424329. The next prime is 21450044424371. The reversal of 21450044424330 is 3342444005412.

21450044424330 is a `hidden beast` number, since 2 + 1 + 4 + 500 + 44 + 42 + 43 + 30 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6180121 + ... + 9005219.

It is an arithmetic number, because the mean of its divisors is an integer number (455187174750).

Almost surely, 2^{21450044424330} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21450044424330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29131979184000).

21450044424330 is an abundant number, since it is smaller than the sum of its proper divisors (36813913943670).

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

21450044424330 is a wasteful number, since it uses less digits than its factorization.

21450044424330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2825637 (or 2825631 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 36.

Adding to 21450044424330 its reverse (3342444005412), we get a palindrome (24792488429742).

The spelling of 21450044424330 in words is "twenty-one trillion, four hundred fifty billion, forty-four million, four hundred twenty-four thousand, three hundred thirty".