85285397017 has 2 divisors, whose sum is σ = 85285397018. Its totient is φ = 85285397016.

The previous prime is 85285396939. The next prime is 85285397023. The reversal of 85285397017 is 71079358258.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64104669721 + 21180727296 = 253189^2 + 145536^2 .

It is a cyclic number.

It is not a de Polignac number, because 85285397017 - 2¹⁵ = 85285364249 is a prime.

It is not a weakly prime, because it can be changed into another prime (85285397077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42642698508 + 42642698509.

It is an arithmetic number, because the mean of its divisors is an integer number (42642698509).

Almost surely, 2^85285397017 is an apocalyptic number.

It is an amenable number.

85285397017 is a deficient number, since it is larger than the sum of its proper divisors (1).

85285397017 is an equidigital number, since it uses as much as digits as its factorization.

85285397017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4233600, while the sum is 55.

The spelling of 85285397017 in words is "eighty-five billion, two hundred eighty-five million, three hundred ninety-seven thousand, seventeen".