685623815112 has 16 divisors (see below), whose sum is σ = 1714059537840. Its totient is φ = 228541271696.

The previous prime is 685623815083. The next prime is 685623815137. The reversal of 685623815112 is 211518326586.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14283829458 + ... + 14283829505.

It is an arithmetic number, because the mean of its divisors is an integer number (107128721115).

Almost surely, 2^685623815112 is an apocalyptic number.

It is an amenable number.

685623815112 is an abundant number, since it is smaller than the sum of its proper divisors (1028435722728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

685623815112 is a wasteful number, since it uses less digits than its factorization.

685623815112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28567658972 (or 28567658968 counting only the distinct ones).

The product of its digits is 691200, while the sum is 48.

The spelling of 685623815112 in words is "six hundred eighty-five billion, six hundred twenty-three million, eight hundred fifteen thousand, one hundred twelve".