9971259827109 has 16 divisors (see below), whose sum is σ = 15195352732800. Its totient is φ = 5697468241920.

The previous prime is 9971259827107. The next prime is 9971259827147. The reversal of 9971259827109 is 9017289521799.

It is not a de Polignac number, because 9971259827109 - 2¹ = 9971259827107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9971259827107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16127532 + ... + 16734389.

It is an arithmetic number, because the mean of its divisors is an integer number (949709545800).

Almost surely, 2^{9971259827109} is an apocalyptic number.

It is an amenable number.

9971259827109 is a deficient number, since it is larger than the sum of its proper divisors (5224092905691).

9971259827109 is a wasteful number, since it uses less digits than its factorization.

9971259827109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32876380.

The product of its (nonzero) digits is 51438240, while the sum is 69.

The spelling of 9971259827109 in words is "nine trillion, nine hundred seventy-one billion, two hundred fifty-nine million, eight hundred twenty-seven thousand, one hundred nine".