195042514657 has 2 divisors, whose sum is σ = 195042514658. Its totient is φ = 195042514656.

The previous prime is 195042514631. The next prime is 195042514687. The reversal of 195042514657 is 756415240591.

195042514657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118171625121 + 76870889536 = 343761^2 + 277256^2 .

It is an emirp because it is prime and its reverse (756415240591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195042514657 - 2¹⁵ = 195042481889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 195042514657.

It is not a weakly prime, because it can be changed into another prime (195042514687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97521257328 + 97521257329.

It is an arithmetic number, because the mean of its divisors is an integer number (97521257329).

Almost surely, 2^195042514657 is an apocalyptic number.

It is an amenable number.

195042514657 is a deficient number, since it is larger than the sum of its proper divisors (1).

195042514657 is an equidigital number, since it uses as much as digits as its factorization.

195042514657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512000, while the sum is 49.

The spelling of 195042514657 in words is "one hundred ninety-five billion, forty-two million, five hundred fourteen thousand, six hundred fifty-seven".