191054341771 has 2 divisors, whose sum is σ = 191054341772. Its totient is φ = 191054341770.

The previous prime is 191054341739. The next prime is 191054341817. The reversal of 191054341771 is 177143450191.

It is a weak prime.

It is an emirp because it is prime and its reverse (177143450191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 191054341771 - 2⁵ = 191054341739 is a prime.

It is not a weakly prime, because it can be changed into another prime (191054341171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95527170885 + 95527170886.

It is an arithmetic number, because the mean of its divisors is an integer number (95527170886).

Almost surely, 2^191054341771 is an apocalyptic number.

191054341771 is a deficient number, since it is larger than the sum of its proper divisors (1).

191054341771 is an equidigital number, since it uses as much as digits as its factorization.

191054341771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 43.

The spelling of 191054341771 in words is "one hundred ninety-one billion, fifty-four million, three hundred forty-one thousand, seven hundred seventy-one".