27447856416 has 72 divisors (see below), whose sum is σ = 78304475340. Its totient is φ = 9120024576.

The previous prime is 27447856369. The next prime is 27447856421. The reversal of 27447856416 is 61465874472.

27447856416 is a `hidden beast` number, since 2 + 7 + 4 + 4 + 78 + 564 + 1 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18494912016 + 8952944400 = 135996^2 + 94620^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62101 + ... + 242388.

Almost surely, 2^27447856416 is an apocalyptic number.

It is an amenable number.

27447856416 is an abundant number, since it is smaller than the sum of its proper divisors (50856618924).

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

27447856416 is a wasteful number, since it uses less digits than its factorization.

27447856416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304818 (or 304807 counting only the distinct ones).

The product of its digits is 9031680, while the sum is 54.

The spelling of 27447856416 in words is "twenty-seven billion, four hundred forty-seven million, eight hundred fifty-six thousand, four hundred sixteen".