27898281216 has 216 divisors, whose sum is σ = 88098934560. Its totient is φ = 8438059008.

The previous prime is 27898281209. The next prime is 27898281233. The reversal of 27898281216 is 61218289872.

27898281216 is a `hidden beast` number, since 278 + 9 + 82 + 81 + 216 = 666.

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, 1759275 + ... + 1775061.

Almost surely, 2^27898281216 is an apocalyptic number.

27898281216 is a gapful number since it is divisible by the number (26) 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 27898281216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44049467280).

27898281216 is an abundant number, since it is smaller than the sum of its proper divisors (60200653344).

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

27898281216 is a wasteful number, since it uses less digits than its factorization.

27898281216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15881 (or 15864 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 54.

The spelling of 27898281216 in words is "twenty-seven billion, eight hundred ninety-eight million, two hundred eighty-one thousand, two hundred sixteen".