12649068208 has 80 divisors (see below), whose sum is σ = 29638103040. Its totient is φ = 5108659200.

The previous prime is 12649068197. The next prime is 12649068209. The reversal of 12649068208 is 80286094621.

It is not an unprimeable number, because it can be changed into a prime (12649068209) 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 15 ways as a sum of consecutive naturals, for example, 390888 + ... + 422008.

It is an arithmetic number, because the mean of its divisors is an integer number (370476288).

Almost surely, 2^12649068208 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 12649068208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14819051520).

12649068208 is an abundant number, since it is smaller than the sum of its proper divisors (16989034832).

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

12649068208 is a wasteful number, since it uses less digits than its factorization.

12649068208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31346 (or 31340 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 46.

The spelling of 12649068208 in words is "twelve billion, six hundred forty-nine million, sixty-eight thousand, two hundred eight".