9665140211 has 2 divisors, whose sum is σ = 9665140212. Its totient is φ = 9665140210.

The previous prime is 9665140193. The next prime is 9665140241. The reversal of 9665140211 is 1120415669.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9665140211 - 2¹⁴ = 9665123827 is a prime.

It is not a weakly prime, because it can be changed into another prime (9665140241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4832570105 + 4832570106.

It is an arithmetic number, because the mean of its divisors is an integer number (4832570106).

Almost surely, 2^9665140211 is an apocalyptic number.

9665140211 is a deficient number, since it is larger than the sum of its proper divisors (1).

9665140211 is an equidigital number, since it uses as much as digits as its factorization.

9665140211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 9665140211 is about 98311.4449644598. Note that the first 3 decimals coincide. The cubic root of 9665140211 is about 2130.1133761570.

The spelling of 9665140211 in words is "nine billion, six hundred sixty-five million, one hundred forty thousand, two hundred eleven".