9409171700728 has 16 divisors (see below), whose sum is σ = 17740756701000. Its totient is φ = 4678303247136.

The previous prime is 9409171700683. The next prime is 9409171700801. The reversal of 9409171700728 is 8270071719049.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3285323883 + ... + 3285326746.

Almost surely, 2^{9409171700728} is an apocalyptic number.

It is an amenable number.

9409171700728 is a deficient number, since it is larger than the sum of its proper divisors (8331585000272).

9409171700728 is a wasteful number, since it uses less digits than its factorization.

9409171700728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6570650814 (or 6570650810 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 55.

The spelling of 9409171700728 in words is "nine trillion, four hundred nine billion, one hundred seventy-one million, seven hundred thousand, seven hundred twenty-eight".