27986560449 has 8 divisors (see below), whose sum is σ = 38183214432. Its totient is φ = 18223806720.

The previous prime is 27986560429. The next prime is 27986560489. The reversal of 27986560449 is 94406568972.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27986560449 - 2¹³ = 27986552257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27986560392 and 27986560401.

It is not an unprimeable number, because it can be changed into a prime (27986560429) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 108474912 + ... + 108475169.

It is an arithmetic number, because the mean of its divisors is an integer number (4772901804).

Almost surely, 2^27986560449 is an apocalyptic number.

It is an amenable number.

27986560449 is a deficient number, since it is larger than the sum of its proper divisors (10196653983).

27986560449 is a wasteful number, since it uses less digits than its factorization.

27986560449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216950127.

The product of its (nonzero) digits is 26127360, while the sum is 60.

The spelling of 27986560449 in words is "twenty-seven billion, nine hundred eighty-six million, five hundred sixty thousand, four hundred forty-nine".