27855546488 has 96 divisors (see below), whose sum is σ = 65924503680. Its totient is φ = 10800820800.

The previous prime is 27855546479. The next prime is 27855546529. The reversal of 27855546488 is 88464555872.

It is a self number, because there is not a number n which added to its sum of digits gives 27855546488.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1419995 + ... + 1439477.

It is an arithmetic number, because the mean of its divisors is an integer number (686713580).

Almost surely, 2^27855546488 is an apocalyptic number.

27855546488 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27855546488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32962251840).

27855546488 is an abundant number, since it is smaller than the sum of its proper divisors (38068957192).

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

27855546488 is a wasteful number, since it uses less digits than its factorization.

27855546488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19729 (or 19714 counting only the distinct ones).

The product of its digits is 86016000, while the sum is 62.

The spelling of 27855546488 in words is "twenty-seven billion, eight hundred fifty-five million, five hundred forty-six thousand, four hundred eighty-eight".