12405443016 has 16 divisors (see below), whose sum is σ = 31013607600. Its totient is φ = 4135147664.

The previous prime is 12405442993. The next prime is 12405443081. The reversal of 12405443016 is 61034450421.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258446706 + ... + 258446753.

It is an arithmetic number, because the mean of its divisors is an integer number (1938350475).

Almost surely, 2^12405443016 is an apocalyptic number.

It is an amenable number.

12405443016 is an abundant number, since it is smaller than the sum of its proper divisors (18608164584).

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

12405443016 is a wasteful number, since it uses less digits than its factorization.

12405443016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516893468 (or 516893464 counting only the distinct ones).

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

Adding to 12405443016 its reverse (61034450421), we get a palindrome (73439893437).

The spelling of 12405443016 in words is "twelve billion, four hundred five million, four hundred forty-three thousand, sixteen".