195366309728 has 24 divisors (see below), whose sum is σ = 386278198488. Its totient is φ = 97263910144.

The previous prime is 195366309709. The next prime is 195366309731. The reversal of 195366309728 is 827903663591.

It is a congruent number.

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, 13093826 + ... + 13108737.

It is an arithmetic number, because the mean of its divisors is an integer number (16094924937).

Almost surely, 2^195366309728 is an apocalyptic number.

It is an amenable number.

195366309728 is a deficient number, since it is larger than the sum of its proper divisors (190911888760).

195366309728 is a wasteful number, since it uses less digits than its factorization.

195366309728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26202806 (or 26202798 counting only the distinct ones).

The product of its (nonzero) digits is 14696640, while the sum is 59.

The spelling of 195366309728 in words is "one hundred ninety-five billion, three hundred sixty-six million, three hundred nine thousand, seven hundred twenty-eight".