21920833584 has 120 divisors (see below), whose sum is σ = 68198329472. Its totient is φ = 6527278080.

The previous prime is 21920833573. The next prime is 21920833637. The reversal of 21920833584 is 48533802912.

21920833584 is a `hidden beast` number, since 2 + 19 + 20 + 8 + 33 + 584 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130837 + ... + 246900.

Almost surely, 2^21920833584 is an apocalyptic number.

21920833584 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21920833584 is an abundant number, since it is smaller than the sum of its proper divisors (46277495888).

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

21920833584 is a wasteful number, since it uses less digits than its factorization.

21920833584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377795 (or 377786 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 21920833584 in words is "twenty-one billion, nine hundred twenty million, eight hundred thirty-three thousand, five hundred eighty-four".