21485664203000 has 64 divisors (see below), whose sum is σ = 50302468307520. Its totient is φ = 8589818832000.

The previous prime is 21485664202999. The next prime is 21485664203063. The reversal of 21485664203000 is 30246658412.

It is a congruent number.

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, 3624596 + ... + 7490595.

It is an arithmetic number, because the mean of its divisors is an integer number (785976067305).

Almost surely, 2^{21485664203000} is an apocalyptic number.

21485664203000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21485664203000 is an abundant number, since it is smaller than the sum of its proper divisors (28816804104520).

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

21485664203000 is a wasteful number, since it uses less digits than its factorization.

21485664203000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11117145 (or 11117131 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 41.

The spelling of 21485664203000 in words is "twenty-one trillion, four hundred eighty-five billion, six hundred sixty-four million, two hundred three thousand".