27808889508 has 36 divisors (see below), whose sum is σ = 70335413148. Its totient is φ = 9264260160.

The previous prime is 27808889483. The next prime is 27808889513. The reversal of 27808889508 is 80598880872.

It can be written as a sum of positive squares in 2 ways, for example, as 14664725604 + 13144163904 = 121098^2 + 114648^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 160483 + ... + 285258.

Almost surely, 2^27808889508 is an apocalyptic number.

It is an amenable number.

27808889508 is an abundant number, since it is smaller than the sum of its proper divisors (42526523640).

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

27808889508 is a wasteful number, since it uses less digits than its factorization.

27808889508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447484 (or 447479 counting only the distinct ones).

The product of its (nonzero) digits is 20643840, while the sum is 63.

The spelling of 27808889508 in words is "twenty-seven billion, eight hundred eight million, eight hundred eighty-nine thousand, five hundred eight".