197113728440 has 32 divisors (see below), whose sum is σ = 466848306000. Its totient is φ = 74695728384.

The previous prime is 197113728431. The next prime is 197113728481. The reversal of 197113728440 is 44827311791.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129679325 + ... + 129680844.

Almost surely, 2^197113728440 is an apocalyptic number.

197113728440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197113728440 is an abundant number, since it is smaller than the sum of its proper divisors (269734577560).

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

197113728440 is a wasteful number, since it uses less digits than its factorization.

197113728440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259360199 (or 259360195 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 47.

The spelling of 197113728440 in words is "one hundred ninety-seven billion, one hundred thirteen million, seven hundred twenty-eight thousand, four hundred forty".