85918102717 has 2 divisors, whose sum is σ = 85918102718. Its totient is φ = 85918102716.

The previous prime is 85918102691. The next prime is 85918102763. The reversal of 85918102717 is 71720181958.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48655977561 + 37262125156 = 220581^2 + 193034^2 .

It is a cyclic number.

It is not a de Polignac number, because 85918102717 - 2¹¹ = 85918100669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85918132717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42959051358 + 42959051359.

It is an arithmetic number, because the mean of its divisors is an integer number (42959051359).

Almost surely, 2^85918102717 is an apocalyptic number.

It is an amenable number.

85918102717 is a deficient number, since it is larger than the sum of its proper divisors (1).

85918102717 is an equidigital number, since it uses as much as digits as its factorization.

85918102717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 49.

The spelling of 85918102717 in words is "eighty-five billion, nine hundred eighteen million, one hundred two thousand, seven hundred seventeen".