195609085057 has 4 divisors (see below), whose sum is σ = 205904300080. Its totient is φ = 185313870036.

The previous prime is 195609085043. The next prime is 195609085123. The reversal of 195609085057 is 750580906591.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 750580906591 = 593 ⋅1265735087.

It is a cyclic number.

It is not a de Polignac number, because 195609085057 - 2²³ = 195600696449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 195609084989 and 195609085007.

It is not an unprimeable number, because it can be changed into a prime (195609035057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5147607483 + ... + 5147607520.

It is an arithmetic number, because the mean of its divisors is an integer number (51476075020).

Almost surely, 2^195609085057 is an apocalyptic number.

It is an amenable number.

195609085057 is a deficient number, since it is larger than the sum of its proper divisors (10295215023).

195609085057 is a wasteful number, since it uses less digits than its factorization.

195609085057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10295215022.

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

The spelling of 195609085057 in words is "one hundred ninety-five billion, six hundred nine million, eighty-five thousand, fifty-seven".