195368329728 has 960 divisors, whose sum is σ = 700655155200. Its totient is φ = 53568552960.

The previous prime is 195368329721. The next prime is 195368329769. The reversal of 195368329728 is 827923863591.

195368329728 is a `hidden beast` number, since 1 + 9 + 536 + 8 + 3 + 2 + 97 + 2 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (195368329721) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1405527483 + ... + 1405527621.

It is an arithmetic number, because the mean of its divisors is an integer number (729849120).

Almost surely, 2^195368329728 is an apocalyptic number.

195368329728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 195368329728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350327577600).

195368329728 is an abundant number, since it is smaller than the sum of its proper divisors (505286825472).

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

195368329728 is a wasteful number, since it uses less digits than its factorization.

195368329728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275 (or 247 counting only the distinct ones).

The product of its digits is 39191040, while the sum is 63.

The spelling of 195368329728 in words is "one hundred ninety-five billion, three hundred sixty-eight million, three hundred twenty-nine thousand, seven hundred twenty-eight".