11661165416 has 64 divisors (see below), whose sum is σ = 23222833920. Its totient is φ = 5478105600.

The previous prime is 11661165377. The next prime is 11661165433. The reversal of 11661165416 is 61456116611.

It is a happy number.

11661165416 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 11661165416.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3530966 + ... + 3534266.

It is an arithmetic number, because the mean of its divisors is an integer number (362856780).

Almost surely, 2^11661165416 is an apocalyptic number.

It is an amenable number.

11661165416 is a deficient number, since it is larger than the sum of its proper divisors (11561668504).

11661165416 is a wasteful number, since it uses less digits than its factorization.

11661165416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3666 (or 3662 counting only the distinct ones).

The product of its digits is 25920, while the sum is 38.

The spelling of 11661165416 in words is "eleven billion, six hundred sixty-one million, one hundred sixty-five thousand, four hundred sixteen".