128321300995 has 32 divisors (see below), whose sum is σ = 157221181440. Its totient is φ = 100514928000.

The previous prime is 128321300983. The next prime is 128321300999. The reversal of 128321300995 is 599003123821.

It is not a de Polignac number, because 128321300995 - 2²⁵ = 128287746563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128321300999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144668442 + ... + 144669328.

It is an arithmetic number, because the mean of its divisors is an integer number (4913161920).

Almost surely, 2^128321300995 is an apocalyptic number.

128321300995 is a deficient number, since it is larger than the sum of its proper divisors (28899880445).

128321300995 is an equidigital number, since it uses as much as digits as its factorization.

128321300995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2355.

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 128321300995 in words is "one hundred twenty-eight billion, three hundred twenty-one million, three hundred thousand, nine hundred ninety-five".