12511120144 has 20 divisors (see below), whose sum is σ = 25076168460. Its totient is φ = 6039850880.

The previous prime is 12511120117. The next prime is 12511120147. The reversal of 12511120144 is 44102111521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4408960000 + 8102160144 = 66400^2 + 90012^2 .

It is not an unprimeable number, because it can be changed into a prime (12511120147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13481347 + ... + 13482274.

It is an arithmetic number, because the mean of its divisors is an integer number (1253808423).

Almost surely, 2^12511120144 is an apocalyptic number.

It is an amenable number.

12511120144 is an abundant number, since it is smaller than the sum of its proper divisors (12565048316).

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

12511120144 is a wasteful number, since it uses less digits than its factorization.

12511120144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26963658 (or 26963652 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 22.

Adding to 12511120144 its reverse (44102111521), we get a palindrome (56613231665).

The spelling of 12511120144 in words is "twelve billion, five hundred eleven million, one hundred twenty thousand, one hundred forty-four".