21485443200 has 1152 divisors, whose sum is σ = 87491275200. Its totient is φ = 4600627200.

The previous prime is 21485443151. The next prime is 21485443201. The reversal of 21485443200 is 234458412.

It is not an unprimeable number, because it can be changed into a prime (21485443201) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 524035180 + ... + 524035220.

Almost surely, 2^21485443200 is an apocalyptic number.

21485443200 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 21485443200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43745637600).

21485443200 is an abundant number, since it is smaller than the sum of its proper divisors (66005832000).

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

21485443200 is a wasteful number, since it uses less digits than its factorization.

21485443200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

The spelling of 21485443200 in words is "twenty-one billion, four hundred eighty-five million, four hundred forty-three thousand, two hundred".