27863456568 has 32 divisors (see below), whose sum is σ = 70497907200. Its totient is φ = 9175916768.

The previous prime is 27863456561. The next prime is 27863456573. The reversal of 27863456568 is 86565436872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27863456561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6991848 + ... + 6995831.

It is an arithmetic number, because the mean of its divisors is an integer number (2203059600).

Almost surely, 2^27863456568 is an apocalyptic number.

It is an amenable number.

27863456568 is an abundant number, since it is smaller than the sum of its proper divisors (42634450632).

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

27863456568 is a wasteful number, since it uses less digits than its factorization.

27863456568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13987771 (or 13987767 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 60.

The spelling of 27863456568 in words is "twenty-seven billion, eight hundred sixty-three million, four hundred fifty-six thousand, five hundred sixty-eight".