195430227677 has 2 divisors, whose sum is σ = 195430227678. Its totient is φ = 195430227676.

The previous prime is 195430227673. The next prime is 195430227689. The reversal of 195430227677 is 776722034591.

195430227677 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., 104798523076 + 90631704601 = 323726^2 + 301051^2 .

It is an emirp because it is prime and its reverse (776722034591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195430227677 - 2² = 195430227673 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195430227673) 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, 97715113838 + 97715113839.

It is an arithmetic number, because the mean of its divisors is an integer number (97715113839).

Almost surely, 2^195430227677 is an apocalyptic number.

It is an amenable number.

195430227677 is a deficient number, since it is larger than the sum of its proper divisors (1).

195430227677 is an equidigital number, since it uses as much as digits as its factorization.

195430227677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4445280, while the sum is 53.

The spelling of 195430227677 in words is "one hundred ninety-five billion, four hundred thirty million, two hundred twenty-seven thousand, six hundred seventy-seven".