27885805667 has 2 divisors, whose sum is σ = 27885805668. Its totient is φ = 27885805666.

The previous prime is 27885805663. The next prime is 27885805669. The reversal of 27885805667 is 76650858872.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27885805667 - 2² = 27885805663 is a prime.

Together with 27885805669, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27885805663) 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 as a sum of consecutive naturals, namely, 13942902833 + 13942902834.

It is an arithmetic number, because the mean of its divisors is an integer number (13942902834).

Almost surely, 2^27885805667 is an apocalyptic number.

27885805667 is a deficient number, since it is larger than the sum of its proper divisors (1).

27885805667 is an equidigital number, since it uses as much as digits as its factorization.

27885805667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45158400, while the sum is 62.

The spelling of 27885805667 in words is "twenty-seven billion, eight hundred eighty-five million, eight hundred five thousand, six hundred sixty-seven".