195808732271 has 2 divisors, whose sum is σ = 195808732272. Its totient is φ = 195808732270.

The previous prime is 195808732267. The next prime is 195808732367. The reversal of 195808732271 is 172237808591.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 195808732271 - 2² = 195808732267 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195808732241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97904366135 + 97904366136.

It is an arithmetic number, because the mean of its divisors is an integer number (97904366136).

Almost surely, 2^195808732271 is an apocalyptic number.

195808732271 is a deficient number, since it is larger than the sum of its proper divisors (1).

195808732271 is an equidigital number, since it uses as much as digits as its factorization.

195808732271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1693440, while the sum is 53.

The spelling of 195808732271 in words is "one hundred ninety-five billion, eight hundred eight million, seven hundred thirty-two thousand, two hundred seventy-one".