85073099717 has 2 divisors, whose sum is σ = 85073099718. Its totient is φ = 85073099716.

The previous prime is 85073099693. The next prime is 85073099767. The reversal of 85073099717 is 71799037058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80255490436 + 4817609281 = 283294^2 + 69409^2 .

It is a cyclic number.

It is not a de Polignac number, because 85073099717 - 2¹² = 85073095621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85073099767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42536549858 + 42536549859.

It is an arithmetic number, because the mean of its divisors is an integer number (42536549859).

Almost surely, 2^85073099717 is an apocalyptic number.

It is an amenable number.

85073099717 is a deficient number, since it is larger than the sum of its proper divisors (1).

85073099717 is an equidigital number, since it uses as much as digits as its factorization.

85073099717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3333960, while the sum is 56.

The spelling of 85073099717 in words is "eighty-five billion, seventy-three million, ninety-nine thousand, seven hundred seventeen".