128986974726 has 8 divisors (see below), whose sum is σ = 257973949464. Its totient is φ = 42995658240.

The previous prime is 128986974713. The next prime is 128986974757. The reversal of 128986974726 is 627479689821.

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

128986974726 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10748914555 + ... + 10748914566.

It is an arithmetic number, because the mean of its divisors is an integer number (32246743683).

Almost surely, 2^128986974726 is an apocalyptic number.

128986974726 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128986974726 is a wasteful number, since it uses less digits than its factorization.

128986974726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21497829126.

The product of its digits is 146313216, while the sum is 69.

The spelling of 128986974726 in words is "one hundred twenty-eight billion, nine hundred eighty-six million, nine hundred seventy-four thousand, seven hundred twenty-six".