850645426073 has 2 divisors, whose sum is σ = 850645426074. Its totient is φ = 850645426072.

The previous prime is 850645426061. The next prime is 850645426177. The reversal of 850645426073 is 370624546058.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 850511861824 + 133564249 = 922232^2 + 11557^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-850645426073 is a prime.

It is not a weakly prime, because it can be changed into another prime (850645416073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425322713036 + 425322713037.

It is an arithmetic number, because the mean of its divisors is an integer number (425322713037).

Almost surely, 2^850645426073 is an apocalyptic number.

It is an amenable number.

850645426073 is a deficient number, since it is larger than the sum of its proper divisors (1).

850645426073 is an equidigital number, since it uses as much as digits as its factorization.

850645426073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4838400, while the sum is 50.

The spelling of 850645426073 in words is "eight hundred fifty billion, six hundred forty-five million, four hundred twenty-six thousand, seventy-three".