12485665896 has 128 divisors (see below), whose sum is σ = 35254517760. Its totient is φ = 3650630400.

The previous prime is 12485665811. The next prime is 12485665901. The reversal of 12485665896 is 69856658421.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3001450 + ... + 3005606.

It is an arithmetic number, because the mean of its divisors is an integer number (275425920).

Almost surely, 2^12485665896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12485665896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17627258880).

12485665896 is an abundant number, since it is smaller than the sum of its proper divisors (22768851864).

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

12485665896 is a wasteful number, since it uses less digits than its factorization.

12485665896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4575 (or 4571 counting only the distinct ones).

The product of its digits is 24883200, while the sum is 60.

The spelling of 12485665896 in words is "twelve billion, four hundred eighty-five million, six hundred sixty-five thousand, eight hundred ninety-six".