197998621654720 has 56 divisors (see below), whose sum is σ = 479213467334928. Its totient is φ = 77901097036800.

The previous prime is 197998621654667. The next prime is 197998621654727. The reversal of 197998621654720 is 27456126899791.

It is not an unprimeable number, because it can be changed into a prime (197998621654727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5071666486 + ... + 5071705525.

Almost surely, 2^{197998621654720} is an apocalyptic number.

197998621654720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197998621654720 is an abundant number, since it is smaller than the sum of its proper divisors (281214845680208).

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

197998621654720 is a wasteful number, since it uses less digits than its factorization.

197998621654720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10143372089 (or 10143372079 counting only the distinct ones).

The product of its (nonzero) digits is 823011840, while the sum is 76.

The spelling of 197998621654720 in words is "one hundred ninety-seven trillion, nine hundred ninety-eight billion, six hundred twenty-one million, six hundred fifty-four thousand, seven hundred twenty".