128109048440289 has 32 divisors (see below), whose sum is σ = 196199365939200. Its totient is φ = 72836052412032.

The previous prime is 128109048440231. The next prime is 128109048440291. The reversal of 128109048440289 is 982044840901821.

It is not a de Polignac number, because 128109048440289 - 2⁸ = 128109048440033 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (128109048440489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3372139 + ... + 16358160.

It is an arithmetic number, because the mean of its divisors is an integer number (6131230185600).

Almost surely, 2^{128109048440289} is an apocalyptic number.

It is an amenable number.

128109048440289 is a deficient number, since it is larger than the sum of its proper divisors (68090317498911).

128109048440289 is a wasteful number, since it uses less digits than its factorization.

128109048440289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19731869.

The product of its (nonzero) digits is 10616832, while the sum is 60.

The spelling of 128109048440289 in words is "one hundred twenty-eight trillion, one hundred nine billion, forty-eight million, four hundred forty thousand, two hundred eighty-nine".