12646410312 has 64 divisors (see below), whose sum is σ = 32434617600. Its totient is φ = 4106626560.

The previous prime is 12646410311. The next prime is 12646410319. The reversal of 12646410312 is 21301464621.

It is a self number, because there is not a number n which added to its sum of digits gives 12646410312.

It is not an unprimeable number, because it can be changed into a prime (12646410311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 688593 + ... + 706719.

It is an arithmetic number, because the mean of its divisors is an integer number (506790900).

Almost surely, 2^12646410312 is an apocalyptic number.

12646410312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12646410312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16217308800).

12646410312 is an abundant number, since it is smaller than the sum of its proper divisors (19788207288).

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

12646410312 is a wasteful number, since it uses less digits than its factorization.

12646410312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18886 (or 18882 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 12646410312 its reverse (21301464621), we get a palindrome (33947874933).

The spelling of 12646410312 in words is "twelve billion, six hundred forty-six million, four hundred ten thousand, three hundred twelve".