197144165728 has 24 divisors (see below), whose sum is σ = 388172772288. Its totient is φ = 98560604544.

The previous prime is 197144165689. The next prime is 197144165759. The reversal of 197144165728 is 827561441791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76176 + ... + 632527.

It is an arithmetic number, because the mean of its divisors is an integer number (16173865512).

Almost surely, 2^197144165728 is an apocalyptic number.

It is an amenable number.

197144165728 is a deficient number, since it is larger than the sum of its proper divisors (191028606560).

197144165728 is an equidigital number, since it uses as much as digits as its factorization.

197144165728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717406 (or 717398 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 55.

The spelling of 197144165728 in words is "one hundred ninety-seven billion, one hundred forty-four million, one hundred sixty-five thousand, seven hundred twenty-eight".