128600069109 has 16 divisors (see below), whose sum is σ = 175976769024. Its totient is φ = 83507471600.

The previous prime is 128600069069. The next prime is 128600069141. The reversal of 128600069109 is 901960006821.

It is a cyclic number.

It is not a de Polignac number, because 128600069109 - 2⁸ = 128600068853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128600069179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3619407 + ... + 3654764.

It is an arithmetic number, because the mean of its divisors is an integer number (10998548064).

Almost surely, 2^128600069109 is an apocalyptic number.

It is an amenable number.

128600069109 is a deficient number, since it is larger than the sum of its proper divisors (47376699915).

128600069109 is an equidigital number, since it uses as much as digits as its factorization.

128600069109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7274328.

The product of its (nonzero) digits is 46656, while the sum is 42.

The spelling of 128600069109 in words is "one hundred twenty-eight billion, six hundred million, sixty-nine thousand, one hundred nine".