195471506728 has 16 divisors (see below), whose sum is σ = 366753600000. Its totient is φ = 97670546736.

The previous prime is 195471506717. The next prime is 195471506767. The reversal of 195471506728 is 827605174591.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8138088 + ... + 8162071.

It is an arithmetic number, because the mean of its divisors is an integer number (22922100000).

Almost surely, 2^195471506728 is an apocalyptic number.

It is an amenable number.

195471506728 is a deficient number, since it is larger than the sum of its proper divisors (171282093272).

195471506728 is a wasteful number, since it uses less digits than its factorization.

195471506728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16301664 (or 16301660 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 55.

The spelling of 195471506728 in words is "one hundred ninety-five billion, four hundred seventy-one million, five hundred six thousand, seven hundred twenty-eight".