21584041032 has 64 divisors (see below), whose sum is σ = 54427412160. Its totient is φ = 7132486400.

The previous prime is 21584041027. The next prime is 21584041051. The reversal of 21584041032 is 23014048512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3710158 + ... + 3715970.

It is an arithmetic number, because the mean of its divisors is an integer number (850428315).

Almost surely, 2^21584041032 is an apocalyptic number.

It is an amenable number.

21584041032 is an abundant number, since it is smaller than the sum of its proper divisors (32843371128).

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

21584041032 is a wasteful number, since it uses less digits than its factorization.

21584041032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7134 (or 7130 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 21584041032 its reverse (23014048512), we get a palindrome (44598089544).

The spelling of 21584041032 in words is "twenty-one billion, five hundred eighty-four million, forty-one thousand, thirty-two".