11165532109 has 2 divisors, whose sum is σ = 11165532110. Its totient is φ = 11165532108.

The previous prime is 11165532107. The next prime is 11165532127. The reversal of 11165532109 is 90123556111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11108106025 + 57426084 = 105395^2 + 7578^2 .

It is a cyclic number.

It is not a de Polignac number, because 11165532109 - 2¹ = 11165532107 is a prime.

Together with 11165532107, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11165532107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5582766054 + 5582766055.

It is an arithmetic number, because the mean of its divisors is an integer number (5582766055).

Almost surely, 2^11165532109 is an apocalyptic number.

It is an amenable number.

11165532109 is a deficient number, since it is larger than the sum of its proper divisors (1).

11165532109 is an equidigital number, since it uses as much as digits as its factorization.

11165532109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8100, while the sum is 34.

The spelling of 11165532109 in words is "eleven billion, one hundred sixty-five million, five hundred thirty-two thousand, one hundred nine".