195689297200 has 120 divisors (see below), whose sum is σ = 486626644080. Its totient is φ = 75534412800.

The previous prime is 195689297189. The next prime is 195689297231. The reversal of 195689297200 is 2792986591.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27964102 + ... + 27971098.

It is an arithmetic number, because the mean of its divisors is an integer number (4055222034).

Almost surely, 2^195689297200 is an apocalyptic number.

195689297200 is a gapful number since it is divisible by the number (10) 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 195689297200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243313322040).

195689297200 is an abundant number, since it is smaller than the sum of its proper divisors (290937346880).

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

195689297200 is a wasteful number, since it uses less digits than its factorization.

195689297200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9455 (or 9444 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 58.

The spelling of 195689297200 in words is "one hundred ninety-five billion, six hundred eighty-nine million, two hundred ninety-seven thousand, two hundred".