21032830816480 has 48 divisors (see below), whose sum is σ = 56788643207520. Its totient is φ = 7211256279552.

The previous prime is 21032830816477. The next prime is 21032830816531. The reversal of 21032830816480 is 8461803823012.

It is a self number, because there is not a number n which added to its sum of digits gives 21032830816480.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 9389655495 + ... + 9389657734.

It is an arithmetic number, because the mean of its divisors is an integer number (1183096733490).

Almost surely, 2^{21032830816480} is an apocalyptic number.

21032830816480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21032830816480 is an abundant number, since it is smaller than the sum of its proper divisors (35755812391040).

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

21032830816480 is a wasteful number, since it uses less digits than its factorization.

21032830816480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18779313251 (or 18779313243 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 21032830816480 in words is "twenty-one trillion, thirty-two billion, eight hundred thirty million, eight hundred sixteen thousand, four hundred eighty".