128806045607 has 4 divisors (see below), whose sum is σ = 128806950360. Its totient is φ = 128805140856.

The previous prime is 128806045603. The next prime is 128806045637. The reversal of 128806045607 is 706540608821.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 128806045607 - 2² = 128806045603 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 (128806045603) 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 3 ways as a sum of consecutive naturals, for example, 186893 + ... + 540870.

It is an arithmetic number, because the mean of its divisors is an integer number (32201737590).

Almost surely, 2^128806045607 is an apocalyptic number.

128806045607 is a deficient number, since it is larger than the sum of its proper divisors (904753).

128806045607 is an equidigital number, since it uses as much as digits as its factorization.

128806045607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904752.

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 128806045607 in words is "one hundred twenty-eight billion, eight hundred six million, forty-five thousand, six hundred seven".