128108442648 has 64 divisors (see below), whose sum is σ = 350049669120. Its totient is φ = 38894400000.

The previous prime is 128108442643. The next prime is 128108442653. The reversal of 128108442648 is 846244801821.

It is an interprime number because it is at equal distance from previous prime (128108442643) and next prime (128108442653).

It is a junction number, because it is equal to n+sod(n) for n = 128108442597 and 128108442606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128108442643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5051728 + ... + 5077023.

It is an arithmetic number, because the mean of its divisors is an integer number (5469526080).

Almost surely, 2^128108442648 is an apocalyptic number.

It is an amenable number.

128108442648 is an abundant number, since it is smaller than the sum of its proper divisors (221941226472).

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

128108442648 is a wasteful number, since it uses less digits than its factorization.

128108442648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10128808 (or 10128804 counting only the distinct ones).

The product of its (nonzero) digits is 786432, while the sum is 48.

The spelling of 128108442648 in words is "one hundred twenty-eight billion, one hundred eight million, four hundred forty-two thousand, six hundred forty-eight".