27853538868 has 72 divisors (see below), whose sum is σ = 70842408000. Its totient is φ = 9227281536.

The previous prime is 27853538863. The next prime is 27853538897. The reversal of 27853538868 is 86883535872.

27853538868 is a `hidden beast` number, since 2 + 7 + 8 + 535 + 38 + 8 + 68 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27853538863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8545023 + ... + 8548281.

Almost surely, 2^27853538868 is an apocalyptic number.

It is an amenable number.

27853538868 is an abundant number, since it is smaller than the sum of its proper divisors (42988869132).

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

27853538868 is a wasteful number, since it uses less digits than its factorization.

27853538868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4661 (or 4656 counting only the distinct ones).

The product of its digits is 77414400, while the sum is 63.

The spelling of 27853538868 in words is "twenty-seven billion, eight hundred fifty-three million, five hundred thirty-eight thousand, eight hundred sixty-eight".