27927823872 has 160 divisors (see below), whose sum is σ = 81257299200. Its totient is φ = 8471715840.

The previous prime is 27927823849. The next prime is 27927823921. The reversal of 27927823872 is 27832872972.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1407879 + ... + 1427577.

It is an arithmetic number, because the mean of its divisors is an integer number (507858120).

Almost surely, 2^27927823872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27927823872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40628649600).

27927823872 is an abundant number, since it is smaller than the sum of its proper divisors (53329475328).

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

27927823872 is a wasteful number, since it uses less digits than its factorization.

27927823872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19804 (or 19788 counting only the distinct ones).

The product of its digits is 9483264, while the sum is 57.

The spelling of 27927823872 in words is "twenty-seven billion, nine hundred twenty-seven million, eight hundred twenty-three thousand, eight hundred seventy-two".