11321665669 has 2 divisors, whose sum is σ = 11321665670. Its totient is φ = 11321665668.

The previous prime is 11321665601. The next prime is 11321665673. The reversal of 11321665669 is 96656612311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6995315044 + 4326350625 = 83638^2 + 65775^2 .

It is a cyclic number.

It is not a de Polignac number, because 11321665669 - 2³¹ = 9174182021 is a prime.

It is a super-2 number, since 2×11321665669² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11321663669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5660832834 + 5660832835.

It is an arithmetic number, because the mean of its divisors is an integer number (5660832835).

Almost surely, 2^11321665669 is an apocalyptic number.

It is an amenable number.

11321665669 is a deficient number, since it is larger than the sum of its proper divisors (1).

11321665669 is an equidigital number, since it uses as much as digits as its factorization.

11321665669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 46.

The spelling of 11321665669 in words is "eleven billion, three hundred twenty-one million, six hundred sixty-five thousand, six hundred sixty-nine".