12270128648 has 8 divisors (see below), whose sum is σ = 23006491230. Its totient is φ = 6135064320.

The previous prime is 12270128639. The next prime is 12270128681. The reversal of 12270128648 is 84682107221.

12270128648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10608588004 + 1661540644 = 102998^2 + 40762^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 766883033 + ... + 766883048.

Almost surely, 2^12270128648 is an apocalyptic number.

It is an amenable number.

12270128648 is a deficient number, since it is larger than the sum of its proper divisors (10736362582).

12270128648 is a wasteful number, since it uses less digits than its factorization.

12270128648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533766087 (or 1533766083 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 41.

The spelling of 12270128648 in words is "twelve billion, two hundred seventy million, one hundred twenty-eight thousand, six hundred forty-eight".