128771039999 has 8 divisors (see below), whose sum is σ = 148104272928. Its totient is φ = 109672149600.

The previous prime is 128771039963. The next prime is 128771040029. The reversal of 128771039999 is 999930177821.

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

It is a cyclic number.

It is not a de Polignac number, because 128771039999 - 2⁸ = 128771039743 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 (128771039399) 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, 58584452 + ... + 58586649.

It is an arithmetic number, because the mean of its divisors is an integer number (18513034116).

Almost surely, 2^128771039999 is an apocalyptic number.

128771039999 is a deficient number, since it is larger than the sum of its proper divisors (19333232929).

128771039999 is a wasteful number, since it uses less digits than its factorization.

128771039999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117171265.

The product of its (nonzero) digits is 15431472, while the sum is 65.

The spelling of 128771039999 in words is "one hundred twenty-eight billion, seven hundred seventy-one million, thirty-nine thousand, nine hundred ninety-nine".