12553555144 has 32 divisors (see below), whose sum is σ = 25386331320. Its totient is φ = 5785307136.

The previous prime is 12553555097. The next prime is 12553555153. The reversal of 12553555144 is 44155535521.

It can be written as a sum of positive squares in 4 ways, for example, as 10718460900 + 1835094244 = 103530^2 + 42838^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12553555097 and 12553555106.

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, 19687 + ... + 159670.

Almost surely, 2^12553555144 is an apocalyptic number.

It is an amenable number.

12553555144 is an abundant number, since it is smaller than the sum of its proper divisors (12832776176).

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

12553555144 is a wasteful number, since it uses less digits than its factorization.

12553555144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180049 (or 180045 counting only the distinct ones).

The product of its digits is 300000, while the sum is 40.

The spelling of 12553555144 in words is "twelve billion, five hundred fifty-three million, five hundred fifty-five thousand, one hundred forty-four".