11660065541 has 2 divisors, whose sum is σ = 11660065542. Its totient is φ = 11660065540.

The previous prime is 11660065531. The next prime is 11660065567. The reversal of 11660065541 is 14556006611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7947722500 + 3712343041 = 89150^2 + 60929^2 .

It is a cyclic number.

It is not a de Polignac number, because 11660065541 - 2¹⁰ = 11660064517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11660065531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5830032770 + 5830032771.

It is an arithmetic number, because the mean of its divisors is an integer number (5830032771).

Almost surely, 2^11660065541 is an apocalyptic number.

It is an amenable number.

11660065541 is a deficient number, since it is larger than the sum of its proper divisors (1).

11660065541 is an equidigital number, since it uses as much as digits as its factorization.

11660065541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 11660065541 in words is "eleven billion, six hundred sixty million, sixty-five thousand, five hundred forty-one".