791366913749 has 2 divisors, whose sum is σ = 791366913750. Its totient is φ = 791366913748.

The previous prime is 791366913731. The next prime is 791366913751. The reversal of 791366913749 is 947319663197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 427118452849 + 364248460900 = 653543^2 + 603530^2 .

It is an emirp because it is prime and its reverse (947319663197) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-791366913749 is a prime.

It is a super-3 number, since 3×791366913749³ (a number of 37 digits) contains 333 as substring.

Together with 791366913751, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (791366913709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395683456874 + 395683456875.

It is an arithmetic number, because the mean of its divisors is an integer number (395683456875).

Almost surely, 2^791366913749 is an apocalyptic number.

It is an amenable number.

791366913749 is a deficient number, since it is larger than the sum of its proper divisors (1).

791366913749 is an equidigital number, since it uses as much as digits as its factorization.

791366913749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46294416, while the sum is 65.

The spelling of 791366913749 in words is "seven hundred ninety-one billion, three hundred sixty-six million, nine hundred thirteen thousand, seven hundred forty-nine".