12547446912 has 1152 divisors, whose sum is σ = 52181176320. Its totient is φ = 2911334400.

The previous prime is 12547446883. The next prime is 12547446949. The reversal of 12547446912 is 21964474521.

12547446912 is a `hidden beast` number, since 1 + 2 + 547 + 44 + 69 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (1152).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 404756337 + ... + 404756367.

It is an arithmetic number, because the mean of its divisors is an integer number (45296160).

Almost surely, 2^12547446912 is an apocalyptic number.

12547446912 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 12547446912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26090588160).

12547446912 is an abundant number, since it is smaller than the sum of its proper divisors (39633729408).

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

12547446912 is a wasteful number, since it uses less digits than its factorization.

12547446912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 67 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The spelling of 12547446912 in words is "twelve billion, five hundred forty-seven million, four hundred forty-six thousand, nine hundred twelve".