9699331640625 has 243 divisors, whose sum is σ = 19377791348097. Its totient is φ = 4671562500000.

The previous prime is 9699331640573. The next prime is 9699331640671. The reversal of 9699331640625 is 5260461339969.

The square root of 9699331640625 is 3114375.

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

9699331640625 is a `hidden beast` number, since 96 + 9 + 93 + 31 + 6 + 406 + 25 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6896091333681 + 2803240306944 = 2626041^2 + 1674288^2 .

It is not a de Polignac number, because 9699331640625 - 2⁷ = 9699331640497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 242 ways as a sum of consecutive naturals, for example, 64233984300 + ... + 64233984450.

Almost surely, 2^{9699331640625} is an apocalyptic number.

9699331640625 is the 3114375-th square number.

9699331640625 is the 1557188-th centered octagonal number.

It is an amenable number.

9699331640625 is a deficient number, since it is larger than the sum of its proper divisors (9678459707472).

9699331640625 is an frugal number, since it uses more digits than its factorization.

9699331640625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 56687040, while the sum is 63.

The spelling of 9699331640625 in words is "nine trillion, six hundred ninety-nine billion, three hundred thirty-one million, six hundred forty thousand, six hundred twenty-five".