21352104444000 has 384 divisors, whose sum is σ = 76524877578240. Its totient is φ = 5161592832000.

The previous prime is 21352104443987. The next prime is 21352104444017. The reversal of 21352104444000 is 44440125312.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent 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, 46366881 + ... + 46825119.

It is an arithmetic number, because the mean of its divisors is an integer number (199283535360).

Almost surely, 2^{21352104444000} is an apocalyptic number.

21352104444000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21352104444000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38262438789120).

21352104444000 is an abundant number, since it is smaller than the sum of its proper divisors (55172773134240).

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

21352104444000 is a wasteful number, since it uses less digits than its factorization.

21352104444000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458631 (or 458613 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 21352104444000 its reverse (44440125312), we get a palindrome (21396544569312).

The spelling of 21352104444000 in words is "twenty-one trillion, three hundred fifty-two billion, one hundred four million, four hundred forty-four thousand".