85418844871 has 2 divisors, whose sum is σ = 85418844872. Its totient is φ = 85418844870.

The previous prime is 85418844851. The next prime is 85418844877. The reversal of 85418844871 is 17844881458.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85418844871 - 2⁹ = 85418844359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85418844877) 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, 42709422435 + 42709422436.

It is an arithmetic number, because the mean of its divisors is an integer number (42709422436).

Almost surely, 2^85418844871 is an apocalyptic number.

85418844871 is a deficient number, since it is larger than the sum of its proper divisors (1).

85418844871 is an equidigital number, since it uses as much as digits as its factorization.

85418844871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9175040, while the sum is 58.

The spelling of 85418844871 in words is "eighty-five billion, four hundred eighteen million, eight hundred forty-four thousand, eight hundred seventy-one".