9972089606209 has 2 divisors, whose sum is σ = 9972089606210. Its totient is φ = 9972089606208.

The previous prime is 9972089606189. The next prime is 9972089606231. The reversal of 9972089606209 is 9026069802799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6992851360000 + 2979238246209 = 2644400^2 + 1726047^2 .

It is a cyclic number.

It is not a de Polignac number, because 9972089606209 - 2¹¹ = 9972089604161 is a prime.

It is a super-2 number, since 2×9972089606209² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9972089606279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4986044803104 + 4986044803105.

It is an arithmetic number, because the mean of its divisors is an integer number (4986044803105).

Almost surely, 2^{9972089606209} is an apocalyptic number.

It is an amenable number.

9972089606209 is a deficient number, since it is larger than the sum of its proper divisors (1).

9972089606209 is an equidigital number, since it uses as much as digits as its factorization.

9972089606209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52907904, while the sum is 67.

The spelling of 9972089606209 in words is "nine trillion, nine hundred seventy-two billion, eighty-nine million, six hundred six thousand, two hundred nine".