11165121606 has 16 divisors (see below), whose sum is σ = 22493239344. Its totient is φ = 3694541184.

The previous prime is 11165121593. The next prime is 11165121607. The reversal of 11165121606 is 60612156111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11165121607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6790615 + ... + 6792258.

It is an arithmetic number, because the mean of its divisors is an integer number (1405827459).

Almost surely, 2^11165121606 is an apocalyptic number.

11165121606 is an abundant number, since it is smaller than the sum of its proper divisors (11328117738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11165121606 is a wasteful number, since it uses less digits than its factorization.

11165121606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13583015.

The product of its (nonzero) digits is 2160, while the sum is 30.

Adding to 11165121606 its reverse (60612156111), we get a palindrome (71777277717).

The spelling of 11165121606 in words is "eleven billion, one hundred sixty-five million, one hundred twenty-one thousand, six hundred six".