197937761728 has 56 divisors (see below), whose sum is σ = 463375069184. Its totient is φ = 82093996800.

The previous prime is 197937761713. The next prime is 197937761741. The reversal of 197937761728 is 827167739791.

197937761728 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (56).

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, 7112328 + ... + 7140103.

Almost surely, 2^197937761728 is an apocalyptic number.

It is an amenable number.

197937761728 is an abundant number, since it is smaller than the sum of its proper divisors (265437307456).

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

197937761728 is a wasteful number, since it uses less digits than its factorization.

197937761728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14252481 (or 14252471 counting only the distinct ones).

The product of its digits is 56010528, while the sum is 67.

The spelling of 197937761728 in words is "one hundred ninety-seven billion, nine hundred thirty-seven million, seven hundred sixty-one thousand, seven hundred twenty-eight".