128680898321 has 8 divisors (see below), whose sum is σ = 135701218080. Its totient is φ = 121685342688.

The previous prime is 128680898287. The next prime is 128680898347. The reversal of 128680898321 is 123898086821.

It is a happy number.

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 128680898321 - 2¹⁴ = 128680881937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128680888321) 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, 6180356 + ... + 6201141.

It is an arithmetic number, because the mean of its divisors is an integer number (16962652260).

Almost surely, 2^128680898321 is an apocalyptic number.

It is an amenable number.

128680898321 is a deficient number, since it is larger than the sum of its proper divisors (7020319759).

128680898321 is a wasteful number, since it uses less digits than its factorization.

128680898321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12382063.

The product of its (nonzero) digits is 2654208, while the sum is 56.

The spelling of 128680898321 in words is "one hundred twenty-eight billion, six hundred eighty million, eight hundred ninety-eight thousand, three hundred twenty-one".