12566550336 has 112 divisors (see below), whose sum is σ = 33576768000. Its totient is φ = 4147750912.

The previous prime is 12566550323. The next prime is 12566550349. The reversal of 12566550336 is 63305566521.

It is an interprime number because it is at equal distance from previous prime (12566550323) and next prime (12566550349).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14561041 + ... + 14561903.

Almost surely, 2^12566550336 is an apocalyptic number.

12566550336 is a gapful number since it is divisible by the number (16) 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 12566550336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16788384000).

12566550336 is an abundant number, since it is smaller than the sum of its proper divisors (21010217664).

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

12566550336 is a wasteful number, since it uses less digits than its factorization.

12566550336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1536 (or 1526 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 42.

The spelling of 12566550336 in words is "twelve billion, five hundred sixty-six million, five hundred fifty thousand, three hundred thirty-six".