27821632804 has 24 divisors (see below), whose sum is σ = 56693141568. Its totient is φ = 11698583520.

The previous prime is 27821632739. The next prime is 27821632843. The reversal of 27821632804 is 40823612872.

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, 9372382 + ... + 9375349.

It is an arithmetic number, because the mean of its divisors is an integer number (2362214232).

Almost surely, 2^27821632804 is an apocalyptic number.

It is an amenable number.

27821632804 is an abundant number, since it is smaller than the sum of its proper divisors (28871508764).

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

27821632804 is a wasteful number, since it uses less digits than its factorization.

27821632804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18747795 (or 18747793 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 43.

The spelling of 27821632804 in words is "twenty-seven billion, eight hundred twenty-one million, six hundred thirty-two thousand, eight hundred four".