97665443211 has 16 divisors (see below), whose sum is σ = 152284546304. Its totient is φ = 54510944544.

The previous prime is 97665443153. The next prime is 97665443251. The reversal of 97665443211 is 11234456679.

It is not a de Polignac number, because 97665443211 - 2⁶ = 97665443147 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (97665443251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54077416 + ... + 54079221.

It is an arithmetic number, because the mean of its divisors is an integer number (9517784144).

Almost surely, 2^97665443211 is an apocalyptic number.

97665443211 is a deficient number, since it is larger than the sum of its proper divisors (54619103093).

97665443211 is a wasteful number, since it uses less digits than its factorization.

97665443211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108156690.

The product of its digits is 1088640, while the sum is 48.

The spelling of 97665443211 in words is "ninety-seven billion, six hundred sixty-five million, four hundred forty-three thousand, two hundred eleven".