85668730841 has 2 divisors, whose sum is σ = 85668730842. Its totient is φ = 85668730840.

The previous prime is 85668730783. The next prime is 85668730859. The reversal of 85668730841 is 14803786658.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85602471241 + 66259600 = 292579^2 + 8140^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85668730841 is a prime.

It is not a weakly prime, because it can be changed into another prime (85668739841) 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, 42834365420 + 42834365421.

It is an arithmetic number, because the mean of its divisors is an integer number (42834365421).

Almost surely, 2^85668730841 is an apocalyptic number.

It is an amenable number.

85668730841 is a deficient number, since it is larger than the sum of its proper divisors (1).

85668730841 is an equidigital number, since it uses as much as digits as its factorization.

85668730841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7741440, while the sum is 56.

The spelling of 85668730841 in words is "eighty-five billion, six hundred sixty-eight million, seven hundred thirty thousand, eight hundred forty-one".