12015544244 has 24 divisors (see below), whose sum is σ = 22950992736. Its totient is φ = 5458700000.

The previous prime is 12015544237. The next prime is 12015544267. The reversal of 12015544244 is 44244551021.

It is a self number, because there is not a number n which added to its sum of digits gives 12015544244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11819 + ... + 155469.

It is an arithmetic number, because the mean of its divisors is an integer number (956291364).

Almost surely, 2^12015544244 is an apocalyptic number.

It is an amenable number.

12015544244 is a deficient number, since it is larger than the sum of its proper divisors (10935448492).

12015544244 is a wasteful number, since it uses less digits than its factorization.

12015544244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145567 (or 145565 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

The spelling of 12015544244 in words is "twelve billion, fifteen million, five hundred forty-four thousand, two hundred forty-four".