128434623573 has 8 divisors (see below), whose sum is σ = 175228633888. Its totient is φ = 83631847824.

The previous prime is 128434623553. The next prime is 128434623599. The reversal of 128434623573 is 375326434821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128434623573 - 2²² = 128430429269 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128434623503) 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, 497808490 + ... + 497808747.

It is an arithmetic number, because the mean of its divisors is an integer number (21903579236).

Almost surely, 2^128434623573 is an apocalyptic number.

It is an amenable number.

128434623573 is a deficient number, since it is larger than the sum of its proper divisors (46794010315).

128434623573 is an equidigital number, since it uses as much as digits as its factorization.

128434623573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995617283.

The product of its digits is 2903040, while the sum is 48.

The spelling of 128434623573 in words is "one hundred twenty-eight billion, four hundred thirty-four million, six hundred twenty-three thousand, five hundred seventy-three".