685430811122 has 18 divisors (see below), whose sum is σ = 1074834019917. Its totient is φ = 327801856536.

The previous prime is 685430811073. The next prime is 685430811133. The reversal of 685430811122 is 221118034586.

It can be written as a sum of positive squares in 2 ways, for example, as 685317409921 + 113401201 = 827839^2 + 10649^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=585419.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 685430811122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 26916548 + ... + 26942000.

Almost surely, 2^685430811122 is an apocalyptic number.

685430811122 is a deficient number, since it is larger than the sum of its proper divisors (389403208795).

685430811122 is an frugal number, since it uses more digits than its factorization.

685430811122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50954 (or 25478 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 41.

The spelling of 685430811122 in words is "six hundred eighty-five billion, four hundred thirty million, eight hundred eleven thousand, one hundred twenty-two".