27678253680 has 720 divisors, whose sum is σ = 119696919264. Its totient is φ = 5666734080.

The previous prime is 27678253679. The next prime is 27678253703. The reversal of 27678253680 is 8635287672.

27678253680 is a `hidden beast` number, since 27 + 6 + 7 + 8 + 2 + 536 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 28329352 + ... + 28330328.

Almost surely, 2^27678253680 is an apocalyptic number.

27678253680 is a gapful number since it is divisible by the number (20) 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 27678253680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59848459632).

27678253680 is an abundant number, since it is smaller than the sum of its proper divisors (92018665584).

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

27678253680 is a wasteful number, since it uses less digits than its factorization.

27678253680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094 (or 1078 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 54.

The spelling of 27678253680 in words is "twenty-seven billion, six hundred seventy-eight million, two hundred fifty-three thousand, six hundred eighty".