197243117568 has 336 divisors, whose sum is σ = 663553964736. Its totient is φ = 55284203520.

The previous prime is 197243117567. The next prime is 197243117581. The reversal of 197243117568 is 865711342791.

197243117568 is a `hidden beast` number, since 1 + 9 + 72 + 4 + 3 + 1 + 1 + 7 + 568 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is not an unprimeable number, because it can be changed into a prime (197243117563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27349483 + ... + 27356693.

Almost surely, 2^197243117568 is an apocalyptic number.

197243117568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197243117568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331776982368).

197243117568 is an abundant number, since it is smaller than the sum of its proper divisors (466310847168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197243117568 is an equidigital number, since it uses as much as digits as its factorization.

197243117568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7303 (or 7276 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The spelling of 197243117568 in words is "one hundred ninety-seven billion, two hundred forty-three million, one hundred seventeen thousand, five hundred sixty-eight".