197543494656 has 792 divisors, whose sum is σ = 653304733536. Its totient is φ = 59560427520.

The previous prime is 197543494649. The next prime is 197543494657. The reversal of 197543494656 is 656494345791.

It is a happy number.

197543494656 is a `hidden beast` number, since 1 + 9 + 7 + 543 + 49 + 46 + 5 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 197543494593 and 197543494602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197543494657) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2948410335 + ... + 2948410401.

Almost surely, 2^197543494656 is an apocalyptic number.

197543494656 is a gapful number since it is divisible by the number (16) 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 197543494656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326652366768).

197543494656 is an abundant number, since it is smaller than the sum of its proper divisors (455761238880).

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

197543494656 is an equidigital number, since it uses as much as digits as its factorization.

197543494656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 130 counting only the distinct ones).

The product of its digits is 97977600, while the sum is 63.

The spelling of 197543494656 in words is "one hundred ninety-seven billion, five hundred forty-three million, four hundred ninety-four thousand, six hundred fifty-six".