195053916881 has 2 divisors, whose sum is σ = 195053916882. Its totient is φ = 195053916880.

The previous prime is 195053916877. The next prime is 195053916901. The reversal of 195053916881 is 188619350591.

195053916881 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., 194974350481 + 79566400 = 441559^2 + 8920^2 .

It is a cyclic number.

It is not a de Polignac number, because 195053916881 - 2² = 195053916877 is a prime.

It is a super-2 number, since 2×195053916881² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (195053916781) 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, 97526958440 + 97526958441.

It is an arithmetic number, because the mean of its divisors is an integer number (97526958441).

Almost surely, 2^195053916881 is an apocalyptic number.

It is an amenable number.

195053916881 is a deficient number, since it is larger than the sum of its proper divisors (1).

195053916881 is an equidigital number, since it uses as much as digits as its factorization.

195053916881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2332800, while the sum is 56.

The spelling of 195053916881 in words is "one hundred ninety-five billion, fifty-three million, nine hundred sixteen thousand, eight hundred eighty-one".