27866541863 has 2 divisors, whose sum is σ = 27866541864. Its totient is φ = 27866541862.

The previous prime is 27866541851. The next prime is 27866541883. The reversal of 27866541863 is 36814566872.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27866541863 - 2⁴ = 27866541847 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27866541799 and 27866541808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27866541883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13933270931 + 13933270932.

It is an arithmetic number, because the mean of its divisors is an integer number (13933270932).

Almost surely, 2^27866541863 is an apocalyptic number.

27866541863 is a deficient number, since it is larger than the sum of its proper divisors (1).

27866541863 is an equidigital number, since it uses as much as digits as its factorization.

27866541863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11612160, while the sum is 56.

The spelling of 27866541863 in words is "twenty-seven billion, eight hundred sixty-six million, five hundred forty-one thousand, eight hundred sixty-three".