197665011968 has 36 divisors (see below), whose sum is σ = 394601552268. Its totient is φ = 98821570560.

The previous prime is 197665011967. The next prime is 197665011989. The reversal of 197665011968 is 869110566791.

It can be written as a sum of positive squares in 2 ways, for example, as 55529979904 + 142135032064 = 235648^2 + 377008^2 .

It is not an unprimeable number, because it can be changed into a prime (197665011967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2592308 + ... + 2667468.

Almost surely, 2^197665011968 is an apocalyptic number.

It is an amenable number.

197665011968 is a deficient number, since it is larger than the sum of its proper divisors (196936540300).

197665011968 is an equidigital number, since it uses as much as digits as its factorization.

197665011968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85450 (or 85436 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 59.

The spelling of 197665011968 in words is "one hundred ninety-seven billion, six hundred sixty-five million, eleven thousand, nine hundred sixty-eight".