11808016657 has 2 divisors, whose sum is σ = 11808016658. Its totient is φ = 11808016656.

The previous prime is 11808016637. The next prime is 11808016679. The reversal of 11808016657 is 75661080811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6228524241 + 5579492416 = 78921^2 + 74696^2 .

It is an emirp because it is prime and its reverse (75661080811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11808016657 - 2¹⁹ = 11807492369 is a prime.

It is not a weakly prime, because it can be changed into another prime (11808016637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5904008328 + 5904008329.

It is an arithmetic number, because the mean of its divisors is an integer number (5904008329).

Almost surely, 2^11808016657 is an apocalyptic number.

It is an amenable number.

11808016657 is a deficient number, since it is larger than the sum of its proper divisors (1).

11808016657 is an equidigital number, since it uses as much as digits as its factorization.

11808016657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 43.

The spelling of 11808016657 in words is "eleven billion, eight hundred eight million, sixteen thousand, six hundred fifty-seven".