197905450272 has 24 divisors (see below), whose sum is σ = 519501807216. Its totient is φ = 65968483392.

The previous prime is 197905450217. The next prime is 197905450279. The reversal of 197905450272 is 272054509791.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (197905450279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1030757458 + ... + 1030757649.

It is an arithmetic number, because the mean of its divisors is an integer number (21645908634).

Almost surely, 2^197905450272 is an apocalyptic number.

197905450272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

197905450272 is an abundant number, since it is smaller than the sum of its proper divisors (321596356944).

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

197905450272 is a wasteful number, since it uses less digits than its factorization.

197905450272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2061515120 (or 2061515112 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 51.

The spelling of 197905450272 in words is "one hundred ninety-seven billion, nine hundred five million, four hundred fifty thousand, two hundred seventy-two".