823606549922 has 18 divisors (see below), whose sum is σ = 1337778568017. Its totient is φ = 380118399336.

The previous prime is 823606549901. The next prime is 823606549937. The reversal of 823606549922 is 229945606328.

It can be written as a sum of positive squares in 2 ways, for example, as 704207967241 + 119398582681 = 839171^2 + 345541^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=641719.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 16660013 + ... + 16709375.

Almost surely, 2^823606549922 is an apocalyptic number.

823606549922 is a deficient number, since it is larger than the sum of its proper divisors (514172018095).

823606549922 is an frugal number, since it uses more digits than its factorization.

823606549922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98754 (or 49378 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 56.

The spelling of 823606549922 in words is "eight hundred twenty-three billion, six hundred six million, five hundred forty-nine thousand, nine hundred twenty-two".