191381051713 has 2 divisors, whose sum is σ = 191381051714. Its totient is φ = 191381051712.

The previous prime is 191381051711. The next prime is 191381051717. The reversal of 191381051713 is 317150183191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101472828304 + 89908223409 = 318548^2 + 299847^2 .

It is a cyclic number.

It is not a de Polignac number, because 191381051713 - 2¹ = 191381051711 is a prime.

Together with 191381051711, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (191381051711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95690525856 + 95690525857.

It is an arithmetic number, because the mean of its divisors is an integer number (95690525857).

Almost surely, 2^191381051713 is an apocalyptic number.

It is an amenable number.

191381051713 is a deficient number, since it is larger than the sum of its proper divisors (1).

191381051713 is an equidigital number, since it uses as much as digits as its factorization.

191381051713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 40.

The spelling of 191381051713 in words is "one hundred ninety-one billion, three hundred eighty-one million, fifty-one thousand, seven hundred thirteen".