12816407808 has 108 divisors (see below), whose sum is σ = 37029676320. Its totient is φ = 4263257088.

The previous prime is 12816407803. The next prime is 12816407843. The reversal of 12816407808 is 80870461821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12816407803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1153383 + ... + 1164441.

Almost surely, 2^12816407808 is an apocalyptic number.

12816407808 is a gapful number since it is divisible by the number (18) 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 12816407808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18514838160).

12816407808 is an abundant number, since it is smaller than the sum of its proper divisors (24213268512).

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

12816407808 is a wasteful number, since it uses less digits than its factorization.

12816407808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11584 (or 11567 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The spelling of 12816407808 in words is "twelve billion, eight hundred sixteen million, four hundred seven thousand, eight hundred eight".