128491004307 has 32 divisors (see below), whose sum is σ = 182450518848. Its totient is φ = 80155017216.

The previous prime is 128491004281. The next prime is 128491004309. The reversal of 128491004307 is 703400194821.

It is not a de Polignac number, because 128491004307 - 2¹¹ = 128491002259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128491004309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22567153 + ... + 22572845.

It is an arithmetic number, because the mean of its divisors is an integer number (5701578714).

Almost surely, 2^128491004307 is an apocalyptic number.

128491004307 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

128491004307 is a deficient number, since it is larger than the sum of its proper divisors (53959514541).

128491004307 is a wasteful number, since it uses less digits than its factorization.

128491004307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8199.

The product of its (nonzero) digits is 48384, while the sum is 39.

The spelling of 128491004307 in words is "one hundred twenty-eight billion, four hundred ninety-one million, four thousand, three hundred seven".