27531187163 has 2 divisors, whose sum is σ = 27531187164. Its totient is φ = 27531187162.

The previous prime is 27531187063. The next prime is 27531187213. The reversal of 27531187163 is 36178113572.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27531187163 - 2¹² = 27531183067 is a prime.

It is not a weakly prime, because it can be changed into another prime (27531187063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13765593581 + 13765593582.

It is an arithmetic number, because the mean of its divisors is an integer number (13765593582).

Almost surely, 2^27531187163 is an apocalyptic number.

27531187163 is a deficient number, since it is larger than the sum of its proper divisors (1).

27531187163 is an equidigital number, since it uses as much as digits as its factorization.

27531187163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 44.

The spelling of 27531187163 in words is "twenty-seven billion, five hundred thirty-one million, one hundred eighty-seven thousand, one hundred sixty-three".