28316581171 has 2 divisors, whose sum is σ = 28316581172. Its totient is φ = 28316581170.

The previous prime is 28316581159. The next prime is 28316581187. The reversal of 28316581171 is 17118561382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28316581171 - 2⁷ = 28316581043 is a prime.

It is not a weakly prime, because it can be changed into another prime (28316584171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14158290585 + 14158290586.

It is an arithmetic number, because the mean of its divisors is an integer number (14158290586).

Almost surely, 2^28316581171 is an apocalyptic number.

28316581171 is a deficient number, since it is larger than the sum of its proper divisors (1).

28316581171 is an equidigital number, since it uses as much as digits as its factorization.

28316581171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 43.

The spelling of 28316581171 in words is "twenty-eight billion, three hundred sixteen million, five hundred eighty-one thousand, one hundred seventy-one".