12015402344 has 64 divisors (see below), whose sum is σ = 25484820480. Its totient is φ = 5261400000.

The previous prime is 12015402337. The next prime is 12015402361. The reversal of 12015402344 is 44320451021.

12015402344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 598469 + ... + 618219.

It is an arithmetic number, because the mean of its divisors is an integer number (398200320).

Almost surely, 2^12015402344 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 12015402344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12742410240).

12015402344 is an abundant number, since it is smaller than the sum of its proper divisors (13469418136).

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

12015402344 is a wasteful number, since it uses less digits than its factorization.

12015402344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20022 (or 20018 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 12015402344 its reverse (44320451021), we get a palindrome (56335853365).

The spelling of 12015402344 in words is "twelve billion, fifteen million, four hundred two thousand, three hundred forty-four".