85635730073 has 2 divisors, whose sum is σ = 85635730074. Its totient is φ = 85635730072.

The previous prime is 85635730031. The next prime is 85635730087. The reversal of 85635730073 is 37003753658.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75794494864 + 9841235209 = 275308^2 + 99203^2 .

It is a cyclic number.

It is not a de Polignac number, because 85635730073 - 2²⁰ = 85634681497 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (85635730013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42817865036 + 42817865037.

It is an arithmetic number, because the mean of its divisors is an integer number (42817865037).

Almost surely, 2^85635730073 is an apocalyptic number.

It is an amenable number.

85635730073 is a deficient number, since it is larger than the sum of its proper divisors (1).

85635730073 is an equidigital number, since it uses as much as digits as its factorization.

85635730073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1587600, while the sum is 47.

The spelling of 85635730073 in words is "eighty-five billion, six hundred thirty-five million, seven hundred thirty thousand, seventy-three".