195643523275157 has 2 divisors, whose sum is σ = 195643523275158. Its totient is φ = 195643523275156.

The previous prime is 195643523275141. The next prime is 195643523275237. The reversal of 195643523275157 is 751572325346591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98173041549361 + 97470481725796 = 9908231^2 + 9872714^2 .

It is a cyclic number.

It is not a de Polignac number, because 195643523275157 - 2⁴ = 195643523275141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 195643523275093 and 195643523275102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195643523275117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97821761637578 + 97821761637579.

It is an arithmetic number, because the mean of its divisors is an integer number (97821761637579).

Almost surely, 2^{195643523275157} is an apocalyptic number.

It is an amenable number.

195643523275157 is a deficient number, since it is larger than the sum of its proper divisors (1).

195643523275157 is an equidigital number, since it uses as much as digits as its factorization.

195643523275157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 238140000, while the sum is 65.

The spelling of 195643523275157 in words is "one hundred ninety-five trillion, six hundred forty-three billion, five hundred twenty-three million, two hundred seventy-five thousand, one hundred fifty-seven".