195718723133 has 2 divisors, whose sum is σ = 195718723134. Its totient is φ = 195718723132.

The previous prime is 195718723121. The next prime is 195718723201. The reversal of 195718723133 is 331327817591.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132457418809 + 63261304324 = 363947^2 + 251518^2 .

It is a cyclic number.

It is not a de Polignac number, because 195718723133 - 2⁸ = 195718722877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195718723433) 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 as a sum of consecutive naturals, namely, 97859361566 + 97859361567.

It is an arithmetic number, because the mean of its divisors is an integer number (97859361567).

Almost surely, 2^195718723133 is an apocalyptic number.

It is an amenable number.

195718723133 is a deficient number, since it is larger than the sum of its proper divisors (1).

195718723133 is an equidigital number, since it uses as much as digits as its factorization.

195718723133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 50.

The spelling of 195718723133 in words is "one hundred ninety-five billion, seven hundred eighteen million, seven hundred twenty-three thousand, one hundred thirty-three".