128032075646687 has 8 divisors (see below), whose sum is σ = 128999626000176. Its totient is φ = 127065003694272.

The previous prime is 128032075646677. The next prime is 128032075646723. The reversal of 128032075646687 is 786646570230821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128032075646687 - 2⁶ = 128032075646623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128032075646647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119062988 + ... + 120133505.

It is an arithmetic number, because the mean of its divisors is an integer number (16124953250022).

Almost surely, 2^{128032075646687} is an apocalyptic number.

128032075646687 is a deficient number, since it is larger than the sum of its proper divisors (967550353489).

128032075646687 is a wasteful number, since it uses less digits than its factorization.

128032075646687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239200537.

The product of its (nonzero) digits is 162570240, while the sum is 65.

The spelling of 128032075646687 in words is "one hundred twenty-eight trillion, thirty-two billion, seventy-five million, six hundred forty-six thousand, six hundred eighty-seven".