195151230817 has 2 divisors, whose sum is σ = 195151230818. Its totient is φ = 195151230816.

The previous prime is 195151230713. The next prime is 195151230877. The reversal of 195151230817 is 718032151591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193973299776 + 1177931041 = 440424^2 + 34321^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195151230817 is a prime.

It is not a weakly prime, because it can be changed into another prime (195151230877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97575615408 + 97575615409.

It is an arithmetic number, because the mean of its divisors is an integer number (97575615409).

Almost surely, 2^195151230817 is an apocalyptic number.

It is an amenable number.

195151230817 is a deficient number, since it is larger than the sum of its proper divisors (1).

195151230817 is an equidigital number, since it uses as much as digits as its factorization.

195151230817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 43.

The spelling of 195151230817 in words is "one hundred ninety-five billion, one hundred fifty-one million, two hundred thirty thousand, eight hundred seventeen".