128305510528648 has 32 divisors (see below), whose sum is σ = 248506542927360. Its totient is φ = 62039987360640.

The previous prime is 128305510528621. The next prime is 128305510528667. The reversal of 128305510528648 is 846825015503821.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 128305510528592 and 128305510528601.

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, 180161340 + ... + 180872107.

It is an arithmetic number, because the mean of its divisors is an integer number (7765829466480).

Almost surely, 2^{128305510528648} is an apocalyptic number.

It is an amenable number.

128305510528648 is a deficient number, since it is larger than the sum of its proper divisors (120201032398712).

128305510528648 is a wasteful number, since it uses less digits than its factorization.

128305510528648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361034917 (or 361034913 counting only the distinct ones).

The product of its (nonzero) digits is 18432000, while the sum is 58.

The spelling of 128305510528648 in words is "one hundred twenty-eight trillion, three hundred five billion, five hundred ten million, five hundred twenty-eight thousand, six hundred forty-eight".