27855917088 has 96 divisors (see below), whose sum is σ = 75151911744. Its totient is φ = 9027873792.

The previous prime is 27855917083. The next prime is 27855917107. The reversal of 27855917088 is 88071955872.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (27855917083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9080931 + ... + 9083997.

It is an arithmetic number, because the mean of its divisors is an integer number (782832414).

Almost surely, 2^27855917088 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 27855917088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37575955872).

27855917088 is an abundant number, since it is smaller than the sum of its proper divisors (47295994656).

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

27855917088 is a wasteful number, since it uses less digits than its factorization.

27855917088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5674 (or 5666 counting only the distinct ones).

The product of its (nonzero) digits is 11289600, while the sum is 60.

The spelling of 27855917088 in words is "twenty-seven billion, eight hundred fifty-five million, nine hundred seventeen thousand, eighty-eight".