191451617341 has 2 divisors, whose sum is σ = 191451617342. Its totient is φ = 191451617340.

The previous prime is 191451617339. The next prime is 191451617359. The reversal of 191451617341 is 143716154191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120471468100 + 70980149241 = 347090^2 + 266421^2 .

It is a cyclic number.

It is not a de Polignac number, because 191451617341 - 2¹ = 191451617339 is a prime.

Together with 191451617339, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191451617311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95725808670 + 95725808671.

It is an arithmetic number, because the mean of its divisors is an integer number (95725808671).

Almost surely, 2^191451617341 is an apocalyptic number.

It is an amenable number.

191451617341 is a deficient number, since it is larger than the sum of its proper divisors (1).

191451617341 is an equidigital number, since it uses as much as digits as its factorization.

191451617341 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 43.

The spelling of 191451617341 in words is "one hundred ninety-one billion, four hundred fifty-one million, six hundred seventeen thousand, three hundred forty-one".