9971056659204 has 27 divisors (see below), whose sum is σ = 25204663335943. Its totient is φ = 3323679237672.

The previous prime is 9971056659199. The next prime is 9971056659209. The reversal of 9971056659204 is 4029566501799.

The square root of 9971056659204 is 3157698.

It is a perfect power (a square), and thus also a powerful number.

9971056659204 is a `hidden beast` number, since 9 + 9 + 7 + 10 + 566 + 59 + 2 + 0 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (9971056659199) and next prime (9971056659209).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9971056659209) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 18683047 + ... + 19209329.

Almost surely, 2^{9971056659204} is an apocalyptic number.

9971056659204 is the 3157698-th square number.

It is an amenable number.

9971056659204 is an abundant number, since it is smaller than the sum of its proper divisors (15233606676739).

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

9971056659204 is an frugal number, since it uses more digits than its factorization.

9971056659204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052576 (or 526288 counting only the distinct ones).

The product of its (nonzero) digits is 36741600, while the sum is 63.

The spelling of 9971056659204 in words is "nine trillion, nine hundred seventy-one billion, fifty-six million, six hundred fifty-nine thousand, two hundred four".