128911470407 has 16 divisors (see below), whose sum is σ = 138048043392. Its totient is φ = 119950172160.

The previous prime is 128911470403. The next prime is 128911470419. The reversal of 128911470407 is 704074119821.

It is not a de Polignac number, because 128911470407 - 2² = 128911470403 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 (128911470403) 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, 1530482 + ... + 1612512.

It is an arithmetic number, because the mean of its divisors is an integer number (8628002712).

Almost surely, 2^128911470407 is an apocalyptic number.

128911470407 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

128911470407 is a deficient number, since it is larger than the sum of its proper divisors (9136572985).

128911470407 is an equidigital number, since it uses as much as digits as its factorization.

128911470407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83098.

The product of its (nonzero) digits is 112896, while the sum is 44.

The spelling of 128911470407 in words is "one hundred twenty-eight billion, nine hundred eleven million, four hundred seventy thousand, four hundred seven".