128542964289 has 8 divisors (see below), whose sum is σ = 175037228160. Its totient is φ = 83872004976.

The previous prime is 128542964267. The next prime is 128542964299. The reversal of 128542964289 is 982469245821.

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

It is not a de Polignac number, because 128542964289 - 2⁹ = 128542963777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128542964219) 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, 455825974 + ... + 455826255.

It is an arithmetic number, because the mean of its divisors is an integer number (21879653520).

Almost surely, 2^128542964289 is an apocalyptic number.

It is an amenable number.

128542964289 is a deficient number, since it is larger than the sum of its proper divisors (46494263871).

128542964289 is an equidigital number, since it uses as much as digits as its factorization.

128542964289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911652279.

The product of its digits is 19906560, while the sum is 60.

The spelling of 128542964289 in words is "one hundred twenty-eight billion, five hundred forty-two million, nine hundred sixty-four thousand, two hundred eighty-nine".