685112184129 has 32 divisors (see below), whose sum is σ = 959672958976. Its totient is φ = 434316738240.

The previous prime is 685112184089. The next prime is 685112184139. The reversal of 685112184129 is 921481211586.

It is not a de Polignac number, because 685112184129 - 2⁹ = 685112183617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (685112184139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 581814 + ... + 1307184.

It is an arithmetic number, because the mean of its divisors is an integer number (29989779968).

Almost surely, 2^685112184129 is an apocalyptic number.

It is an amenable number.

685112184129 is a deficient number, since it is larger than the sum of its proper divisors (274560774847).

685112184129 is a wasteful number, since it uses less digits than its factorization.

685112184129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725605.

The product of its digits is 276480, while the sum is 48.

The spelling of 685112184129 in words is "six hundred eighty-five billion, one hundred twelve million, one hundred eighty-four thousand, one hundred twenty-nine".