128449123184 has 20 divisors (see below), whose sum is σ = 250245155160. Its totient is φ = 63869728320.

The previous prime is 128449123183. The next prime is 128449123261. The reversal of 128449123184 is 481321944821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128449123181) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 22174094 + ... + 22179885.

It is an arithmetic number, because the mean of its divisors is an integer number (12512257758).

Almost surely, 2^128449123184 is an apocalyptic number.

It is an amenable number.

128449123184 is a deficient number, since it is larger than the sum of its proper divisors (121796031976).

128449123184 is a wasteful number, since it uses less digits than its factorization.

128449123184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44354168 (or 44354162 counting only the distinct ones).

The product of its digits is 442368, while the sum is 47.

The spelling of 128449123184 in words is "one hundred twenty-eight billion, four hundred forty-nine million, one hundred twenty-three thousand, one hundred eighty-four".