128135800871 has 8 divisors (see below), whose sum is σ = 143992070880. Its totient is φ = 113136626592.

The previous prime is 128135800831. The next prime is 128135800873. The reversal of 128135800871 is 178008531821.

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 128135800871 - 2²² = 128131606567 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 (128135800873) 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, 214273616 + ... + 214274213.

It is an arithmetic number, because the mean of its divisors is an integer number (17999008860).

Almost surely, 2^128135800871 is an apocalyptic number.

128135800871 is a deficient number, since it is larger than the sum of its proper divisors (15856270009).

128135800871 is a wasteful number, since it uses less digits than its factorization.

128135800871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428547865.

The product of its (nonzero) digits is 107520, while the sum is 44.

The spelling of 128135800871 in words is "one hundred twenty-eight billion, one hundred thirty-five million, eight hundred thousand, eight hundred seventy-one".