12444864278620 has 96 divisors (see below), whose sum is σ = 26849556518400. Its totient is φ = 4842632680704.

The previous prime is 12444864278617. The next prime is 12444864278621. The reversal of 12444864278620 is 2687246844421.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12444864278621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1056523891 + ... + 1056535669.

It is an arithmetic number, because the mean of its divisors is an integer number (279682880400).

Almost surely, 2^{12444864278620} is an apocalyptic number.

12444864278620 is a gapful number since it is divisible by the number (10) 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 12444864278620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13424778259200).

12444864278620 is an abundant number, since it is smaller than the sum of its proper divisors (14404692239780).

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

12444864278620 is a wasteful number, since it uses less digits than its factorization.

12444864278620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16667 (or 16665 counting only the distinct ones).

The product of its (nonzero) digits is 33030144, while the sum is 58.

The spelling of 12444864278620 in words is "twelve trillion, four hundred forty-four billion, eight hundred sixty-four million, two hundred seventy-eight thousand, six hundred twenty".