195122097561 has 8 divisors (see below), whose sum is σ = 260165853664. Its totient is φ = 130079869920.

The previous prime is 195122097559. The next prime is 195122097581. The reversal of 195122097561 is 165790221591.

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

It is not a de Polignac number, because 195122097561 - 2¹ = 195122097559 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 195122097561.

It is not an unprimeable number, because it can be changed into a prime (195122097581) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 40651 + ... + 626016.

It is an arithmetic number, because the mean of its divisors is an integer number (32520731708).

Almost surely, 2^195122097561 is an apocalyptic number.

It is an amenable number.

195122097561 is a deficient number, since it is larger than the sum of its proper divisors (65043756103).

195122097561 is an equidigital number, since it uses as much as digits as its factorization.

195122097561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764231.

The product of its (nonzero) digits is 340200, while the sum is 48.

The spelling of 195122097561 in words is "one hundred ninety-five billion, one hundred twenty-two million, ninety-seven thousand, five hundred sixty-one".