195065807905 has 8 divisors (see below), whose sum is σ = 234082214784. Its totient is φ = 156050482800.

The previous prime is 195065807851. The next prime is 195065807917. The reversal of 195065807905 is 509708560591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 195065807905 - 2¹³ = 195065799713 is a prime.

It is a Duffinian 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, 200970 + ... + 656140.

It is an arithmetic number, because the mean of its divisors is an integer number (29260276848).

Almost surely, 2^195065807905 is an apocalyptic number.

It is an amenable number.

195065807905 is a deficient number, since it is larger than the sum of its proper divisors (39016406879).

195065807905 is an equidigital number, since it uses as much as digits as its factorization.

195065807905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540887.

The product of its (nonzero) digits is 3402000, while the sum is 55.

The spelling of 195065807905 in words is "one hundred ninety-five billion, sixty-five million, eight hundred seven thousand, nine hundred five".