27081266688 has 720 divisors, whose sum is σ = 96932474496. Its totient is φ = 7245987840.

The previous prime is 27081266683. The next prime is 27081266689. The reversal of 27081266688 is 88666218072.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27081266683) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 370976220 + ... + 370976292.

Almost surely, 2^27081266688 is an apocalyptic number.

27081266688 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 27081266688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48466237248).

27081266688 is an abundant number, since it is smaller than the sum of its proper divisors (69851207808).

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

27081266688 is a wasteful number, since it uses less digits than its factorization.

27081266688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The spelling of 27081266688 in words is "twenty-seven billion, eighty-one million, two hundred sixty-six thousand, six hundred eighty-eight".