11165671449 has 16 divisors (see below), whose sum is σ = 16583418240. Its totient is φ = 7425023760.

The previous prime is 11165671441. The next prime is 11165671463. The reversal of 11165671449 is 94417656111.

It is a happy number.

It is not a de Polignac number, because 11165671449 - 2³ = 11165671441 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11165671441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 510117 + ... + 531554.

It is an arithmetic number, because the mean of its divisors is an integer number (1036463640).

Almost surely, 2^11165671449 is an apocalyptic number.

It is an amenable number.

11165671449 is a deficient number, since it is larger than the sum of its proper divisors (5417746791).

11165671449 is a wasteful number, since it uses less digits than its factorization.

11165671449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042077 (or 1042071 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The spelling of 11165671449 in words is "eleven billion, one hundred sixty-five million, six hundred seventy-one thousand, four hundred forty-nine".