12307138912 has 48 divisors (see below), whose sum is σ = 25225597152. Its totient is φ = 5905198080.

The previous prime is 12307138897. The next prime is 12307138913. The reversal of 12307138912 is 21983170321.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12307138913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15237 + ... + 157627.

It is an arithmetic number, because the mean of its divisors is an integer number (525533274).

Almost surely, 2^12307138912 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 12307138912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12612798576).

12307138912 is an abundant number, since it is smaller than the sum of its proper divisors (12918458240).

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

12307138912 is a wasteful number, since it uses less digits than its factorization.

12307138912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142511 (or 142503 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The spelling of 12307138912 in words is "twelve billion, three hundred seven million, one hundred thirty-eight thousand, nine hundred twelve".