128481134687 has 8 divisors (see below), whose sum is σ = 128786874480. Its totient is φ = 128175696000.

The previous prime is 128481134681. The next prime is 128481134689. The reversal of 128481134687 is 786431184821.

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 128481134687 - 2⁶ = 128481134623 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 (128481134681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 790937 + ... + 939437.

It is an arithmetic number, because the mean of its divisors is an integer number (16098359310).

Almost surely, 2^128481134687 is an apocalyptic number.

128481134687 is a deficient number, since it is larger than the sum of its proper divisors (305739793).

128481134687 is a wasteful number, since it uses less digits than its factorization.

128481134687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150553.

The product of its digits is 2064384, while the sum is 53.

The spelling of 128481134687 in words is "one hundred twenty-eight billion, four hundred eighty-one million, one hundred thirty-four thousand, six hundred eighty-seven".