197216601984 has 320 divisors, whose sum is σ = 617527033200. Its totient is φ = 62397112320.

The previous prime is 197216601971. The next prime is 197216601997. The reversal of 197216601984 is 489106612791.

197216601984 is a `hidden beast` number, since 1 + 9 + 7 + 21 + 6 + 601 + 9 + 8 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (197216601971) and next prime (197216601997).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 197216601984.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 15721987 + ... + 15734525.

Almost surely, 2^197216601984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197216601984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308763516600).

197216601984 is an abundant number, since it is smaller than the sum of its proper divisors (420310431216).

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

197216601984 is a wasteful number, since it uses less digits than its factorization.

197216601984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12643 (or 12622 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The spelling of 197216601984 in words is "one hundred ninety-seven billion, two hundred sixteen million, six hundred one thousand, nine hundred eighty-four".