8505442273 has 2 divisors, whose sum is σ = 8505442274. Its totient is φ = 8505442272.

The previous prime is 8505442271. The next prime is 8505442291. The reversal of 8505442273 is 3722445058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7269779169 + 1235663104 = 85263^2 + 35152^2 .

It is a cyclic number.

It is not a de Polignac number, because 8505442273 - 2¹ = 8505442271 is a prime.

Together with 8505442271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8505442271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4252721136 + 4252721137.

It is an arithmetic number, because the mean of its divisors is an integer number (4252721137).

Almost surely, 2^8505442273 is an apocalyptic number.

It is an amenable number.

8505442273 is a deficient number, since it is larger than the sum of its proper divisors (1).

8505442273 is an equidigital number, since it uses as much as digits as its factorization.

8505442273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 268800, while the sum is 40.

The square root of 8505442273 is about 92224.9547194250. The cubic root of 8505442273 is about 2041.2630164917.

The spelling of 8505442273 in words is "eight billion, five hundred five million, four hundred forty-two thousand, two hundred seventy-three".