850587814169 has 2 divisors, whose sum is σ = 850587814170. Its totient is φ = 850587814168.

The previous prime is 850587814163. The next prime is 850587814177. The reversal of 850587814169 is 961418785058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 616873580569 + 233714233600 = 785413^2 + 483440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-850587814169 is a prime.

It is a super-2 number, since 2×850587814169² (a number of 25 digits) contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (850587814163) 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, 425293907084 + 425293907085.

It is an arithmetic number, because the mean of its divisors is an integer number (425293907085).

Almost surely, 2^850587814169 is an apocalyptic number.

It is an amenable number.

850587814169 is a deficient number, since it is larger than the sum of its proper divisors (1).

850587814169 is an equidigital number, since it uses as much as digits as its factorization.

850587814169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19353600, while the sum is 62.

The spelling of 850587814169 in words is "eight hundred fifty billion, five hundred eighty-seven million, eight hundred fourteen thousand, one hundred sixty-nine".