12516266412 has 108 divisors (see below), whose sum is σ = 34491693600. Its totient is φ = 3825035136.

The previous prime is 12516266393. The next prime is 12516266417. The reversal of 12516266412 is 21466261521.

12516266412 is a `hidden beast` number, since 1 + 2 + 5 + 1 + 6 + 2 + 6 + 641 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (12516266417) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 899613 + ... + 913419.

Almost surely, 2^12516266412 is an apocalyptic number.

12516266412 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 12516266412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17245846800).

12516266412 is an abundant number, since it is smaller than the sum of its proper divisors (21975427188).

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

12516266412 is a wasteful number, since it uses less digits than its factorization.

12516266412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13992 (or 13974 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The spelling of 12516266412 in words is "twelve billion, five hundred sixteen million, two hundred sixty-six thousand, four hundred twelve".