191933965495441 has 4 divisors (see below), whose sum is σ = 206698116687412. Its totient is φ = 177169814303472.

The previous prime is 191933965495417. The next prime is 191933965495451. The reversal of 191933965495441 is 144594569339191.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48090618867600 + 143843346627841 = 6934740^2 + 11993471^2 .

It is a cyclic number.

It is not a de Polignac number, because 191933965495441 - 2²⁵ = 191933931941009 is a prime.

It is a super-2 number, since 2×191933965495441² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (191933965495451) 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 in 3 ways as a sum of consecutive naturals, for example, 7382075595966 + ... + 7382075595991.

It is an arithmetic number, because the mean of its divisors is an integer number (51674529171853).

Almost surely, 2^{191933965495441} is an apocalyptic number.

It is an amenable number.

191933965495441 is a deficient number, since it is larger than the sum of its proper divisors (14764151191971).

191933965495441 is a wasteful number, since it uses less digits than its factorization.

191933965495441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14764151191970.

The product of its digits is 566870400, while the sum is 73.

The spelling of 191933965495441 in words is "one hundred ninety-one trillion, nine hundred thirty-three billion, nine hundred sixty-five million, four hundred ninety-five thousand, four hundred forty-one".