128651946780288 has 64 divisors (see below), whose sum is σ = 341752750156800. Its totient is φ = 42881344892928.

The previous prime is 128651946780283. The next prime is 128651946780323. The reversal of 128651946780288 is 882087649156821.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (128651946780283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4045248 + ... + 16542911.

It is an arithmetic number, because the mean of its divisors is an integer number (5339886721200).

Almost surely, 2^{128651946780288} is an apocalyptic number.

It is an amenable number.

128651946780288 is an abundant number, since it is smaller than the sum of its proper divisors (213100803376512).

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

128651946780288 is a wasteful number, since it uses less digits than its factorization.

128651946780288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20604449 (or 20604437 counting only the distinct ones).

The product of its (nonzero) digits is 743178240, while the sum is 75.

The spelling of 128651946780288 in words is "one hundred twenty-eight trillion, six hundred fifty-one billion, nine hundred forty-six million, seven hundred eighty thousand, two hundred eighty-eight".