11665546469 has 2 divisors, whose sum is σ = 11665546470. Its totient is φ = 11665546468.

The previous prime is 11665546457. The next prime is 11665546483. The reversal of 11665546469 is 96464556611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11164458244 + 501088225 = 105662^2 + 22385^2 .

It is a cyclic number.

It is not a de Polignac number, because 11665546469 - 2⁸ = 11665546213 is a prime.

It is a super-2 number, since 2×11665546469² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11665546469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11665546439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5832773234 + 5832773235.

It is an arithmetic number, because the mean of its divisors is an integer number (5832773235).

Almost surely, 2^11665546469 is an apocalyptic number.

It is an amenable number.

11665546469 is a deficient number, since it is larger than the sum of its proper divisors (1).

11665546469 is an equidigital number, since it uses as much as digits as its factorization.

11665546469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4665600, while the sum is 53.

The spelling of 11665546469 in words is "eleven billion, six hundred sixty-five million, five hundred forty-six thousand, four hundred sixty-nine".