21941065448000 has 112 divisors (see below), whose sum is σ = 55600701746304. Its totient is φ = 8572323110400.

The previous prime is 21941065447999. The next prime is 21941065448041. The reversal of 21941065448000 is 84456014912.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31547084 + ... + 32235083.

Almost surely, 2^{21941065448000} is an apocalyptic number.

21941065448000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21941065448000 is an abundant number, since it is smaller than the sum of its proper divisors (33659636298304).

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

21941065448000 is an equidigital number, since it uses as much as digits as its factorization.

21941065448000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63782237 (or 63782217 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 21941065448000 in words is "twenty-one trillion, nine hundred forty-one billion, sixty-five million, four hundred forty-eight thousand".