11731965494573 has 2 divisors, whose sum is σ = 11731965494574. Its totient is φ = 11731965494572.

The previous prime is 11731965494569. The next prime is 11731965494597. The reversal of 11731965494573 is 37549456913711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11728857766564 + 3107728009 = 3424742^2 + 55747^2 .

It is an emirp because it is prime and its reverse (37549456913711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11731965494573 - 2² = 11731965494569 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11731965494563) 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, 5865982747286 + 5865982747287.

It is an arithmetic number, because the mean of its divisors is an integer number (5865982747287).

Almost surely, 2^{11731965494573} is an apocalyptic number.

It is an amenable number.

11731965494573 is a deficient number, since it is larger than the sum of its proper divisors (1).

11731965494573 is an equidigital number, since it uses as much as digits as its factorization.

11731965494573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 85730400, while the sum is 65.

The spelling of 11731965494573 in words is "eleven trillion, seven hundred thirty-one billion, nine hundred sixty-five million, four hundred ninety-four thousand, five hundred seventy-three".