11391705757 has 2 divisors, whose sum is σ = 11391705758. Its totient is φ = 11391705756.

The previous prime is 11391705707. The next prime is 11391705779. The reversal of 11391705757 is 75750719311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11381902596 + 9803161 = 106686^2 + 3131^2 .

It is an emirp because it is prime and its reverse (75750719311) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11391705757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11391705707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5695852878 + 5695852879.

It is an arithmetic number, because the mean of its divisors is an integer number (5695852879).

Almost surely, 2^11391705757 is an apocalyptic number.

It is an amenable number.

11391705757 is a deficient number, since it is larger than the sum of its proper divisors (1).

11391705757 is an equidigital number, since it uses as much as digits as its factorization.

11391705757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 231525, while the sum is 46.

The spelling of 11391705757 in words is "eleven billion, three hundred ninety-one million, seven hundred five thousand, seven hundred fifty-seven".