195706884881 has 2 divisors, whose sum is σ = 195706884882. Its totient is φ = 195706884880.

The previous prime is 195706884851. The next prime is 195706884899. The reversal of 195706884881 is 188488607591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166117380625 + 29589504256 = 407575^2 + 172016^2 .

It is a cyclic number.

It is not a de Polignac number, because 195706884881 - 2⁶ = 195706884817 is a prime.

It is a super-2 number, since 2×195706884881² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (195706884851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97853442440 + 97853442441.

It is an arithmetic number, because the mean of its divisors is an integer number (97853442441).

Almost surely, 2^195706884881 is an apocalyptic number.

It is an amenable number.

195706884881 is a deficient number, since it is larger than the sum of its proper divisors (1).

195706884881 is an equidigital number, since it uses as much as digits as its factorization.

195706884881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30965760, while the sum is 65.

The spelling of 195706884881 in words is "one hundred ninety-five billion, seven hundred six million, eight hundred eighty-four thousand, eight hundred eighty-one".