21446880284 has 48 divisors (see below), whose sum is σ = 39346866720. Its totient is φ = 10215179520.

The previous prime is 21446880269. The next prime is 21446880293. The reversal of 21446880284 is 48208864412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13295462 + ... + 13297074.

It is an arithmetic number, because the mean of its divisors is an integer number (819726390).

Almost surely, 2^21446880284 is an apocalyptic number.

It is an amenable number.

21446880284 is a deficient number, since it is larger than the sum of its proper divisors (17899986436).

21446880284 is a wasteful number, since it uses less digits than its factorization.

21446880284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3110 (or 3108 counting only the distinct ones).

The product of its (nonzero) digits is 786432, while the sum is 47.

The spelling of 21446880284 in words is "twenty-one billion, four hundred forty-six million, eight hundred eighty thousand, two hundred eighty-four".