197222145152 has 72 divisors (see below), whose sum is σ = 417555828435. Its totient is φ = 92770226176.

The previous prime is 197222145149. The next prime is 197222145209. The reversal of 197222145152 is 251541222791.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

197222145152 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 194212964416 + 3009180736 = 440696^2 + 54856^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=314024.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 85413374 + ... + 85415682.

Almost surely, 2^197222145152 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 197222145152

197222145152 is an abundant number, since it is smaller than the sum of its proper divisors (220333683283).

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

197222145152 is an frugal number, since it uses more digits than its factorization.

197222145152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4666 (or 2328 counting only the distinct ones).

The product of its digits is 100800, while the sum is 41.

The spelling of 197222145152 in words is "one hundred ninety-seven billion, two hundred twenty-two million, one hundred forty-five thousand, one hundred fifty-two".