27827289216 has 48 divisors (see below), whose sum is σ = 80075926710. Its totient is φ = 9275762688.

The previous prime is 27827289109. The next prime is 27827289233. The reversal of 27827289216 is 61298272872.

27827289216 is a `hidden beast` number, since 278 + 272 + 8 + 92 + 16 = 666.

It can be written as a sum of positive squares in only one way, i.e., 14858634816 + 12968654400 = 121896^2 + 113880^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×27827289216² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12076665 + ... + 12078968.

Almost surely, 2^27827289216 is an apocalyptic number.

It is an amenable number.

27827289216 is an abundant number, since it is smaller than the sum of its proper divisors (52248637494).

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

27827289216 is a wasteful number, since it uses less digits than its factorization.

27827289216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24155653 (or 24155638 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The spelling of 27827289216 in words is "twenty-seven billion, eight hundred twenty-seven million, two hundred eighty-nine thousand, two hundred sixteen".