21089683324 has 24 divisors (see below), whose sum is σ = 37055098080. Its totient is φ = 10502585856.

The previous prime is 21089683313. The next prime is 21089683337. The reversal of 21089683324 is 42338698012.

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, 1222084 + ... + 1239220.

It is an arithmetic number, because the mean of its divisors is an integer number (1543962420).

Almost surely, 2^21089683324 is an apocalyptic number.

It is an amenable number.

21089683324 is a deficient number, since it is larger than the sum of its proper divisors (15965414756).

21089683324 is a wasteful number, since it uses less digits than its factorization.

21089683324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18357 (or 18355 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 21089683324 in words is "twenty-one billion, eighty-nine million, six hundred eighty-three thousand, three hundred twenty-four".