850984689673 has 2 divisors, whose sum is σ = 850984689674. Its totient is φ = 850984689672.

The previous prime is 850984689671. The next prime is 850984689719. The reversal of 850984689673 is 376986489058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 832889866384 + 18094823289 = 912628^2 + 134517^2 .

It is a cyclic number.

It is not a de Polignac number, because 850984689673 - 2¹ = 850984689671 is a prime.

It is a super-2 number, since 2×850984689673² (a number of 25 digits) contains 22 as substring.

Together with 850984689671, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 850984689596 and 850984689605.

It is not a weakly prime, because it can be changed into another prime (850984689671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425492344836 + 425492344837.

It is an arithmetic number, because the mean of its divisors is an integer number (425492344837).

Almost surely, 2^850984689673 is an apocalyptic number.

It is an amenable number.

850984689673 is a deficient number, since it is larger than the sum of its proper divisors (1).

850984689673 is an equidigital number, since it uses as much as digits as its factorization.

850984689673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 627056640, while the sum is 73.

The spelling of 850984689673 in words is "eight hundred fifty billion, nine hundred eighty-four million, six hundred eighty-nine thousand, six hundred seventy-three".