27989329568256 has 240 divisors, whose sum is σ = 95297006458368. Its totient is φ = 7738984857600.

The previous prime is 27989329568129. The next prime is 27989329568269. The reversal of 27989329568256 is 65286592398972.

It is a happy number.

27989329568256 is a `hidden beast` number, since 2 + 7 + 9 + 8 + 9 + 3 + 29 + 568 + 25 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12995625 + ... + 14995496.

Almost surely, 2^{27989329568256} is an apocalyptic number.

It is an amenable number.

27989329568256 is an abundant number, since it is smaller than the sum of its proper divisors (67307676890112).

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

27989329568256 is a wasteful number, since it uses less digits than its factorization.

27989329568256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27991183 (or 27991164 counting only the distinct ones).

The product of its digits is 7054387200, while the sum is 81.

The spelling of 27989329568256 in words is "twenty-seven trillion, nine hundred eighty-nine billion, three hundred twenty-nine million, five hundred sixty-eight thousand, two hundred fifty-six".