12443154312 has 32 divisors (see below), whose sum is σ = 31116844800. Its totient is φ = 4146523584.

The previous prime is 12443154289. The next prime is 12443154313. The reversal of 12443154312 is 21345134421.

It is a self number, because there is not a number n which added to its sum of digits gives 12443154312.

It is not an unprimeable number, because it can be changed into a prime (12443154313) 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 7 ways as a sum of consecutive naturals, for example, 12489 + ... + 158247.

It is an arithmetic number, because the mean of its divisors is an integer number (972401400).

Almost surely, 2^12443154312 is an apocalyptic number.

12443154312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12443154312 is an abundant number, since it is smaller than the sum of its proper divisors (18673690488).

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

12443154312 is a wasteful number, since it uses less digits than its factorization.

12443154312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149325 (or 149321 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

Adding to 12443154312 its reverse (21345134421), we get a palindrome (33788288733).

The spelling of 12443154312 in words is "twelve billion, four hundred forty-three million, one hundred fifty-four thousand, three hundred twelve".