12481781416 has 64 divisors (see below), whose sum is σ = 26555760000. Its totient is φ = 5452344576.

The previous prime is 12481781401. The next prime is 12481781419. The reversal of 12481781416 is 61418718421.

It is not an unprimeable number, because it can be changed into a prime (12481781419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2603950 + ... + 2608738.

It is an arithmetic number, because the mean of its divisors is an integer number (414933750).

Almost surely, 2^12481781416 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 12481781416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13277880000).

12481781416 is an abundant number, since it is smaller than the sum of its proper divisors (14073978584).

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

12481781416 is a wasteful number, since it uses less digits than its factorization.

12481781416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6146 (or 6142 counting only the distinct ones).

The product of its digits is 86016, while the sum is 43.

The spelling of 12481781416 in words is "twelve billion, four hundred eighty-one million, seven hundred eighty-one thousand, four hundred sixteen".