11405385616 has 15 divisors (see below), whose sum is σ = 22098762331. Its totient is φ = 5702479216.

The previous prime is 11405385601. The next prime is 11405385643. The reversal of 11405385616 is 61658350411.

The square root of 11405385616 is 106796.

It is a perfect power (a square), and thus also a powerful number.

11405385616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Duffinian number.

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 2 ways as a sum of consecutive naturals, for example, 413835 + ... + 440533.

Almost surely, 2^11405385616 is an apocalyptic number.

11405385616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

11405385616 is the 106796-th square number.

It is an amenable number.

11405385616 is a deficient number, since it is larger than the sum of its proper divisors (10693376715).

11405385616 is an frugal number, since it uses more digits than its factorization.

11405385616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53406 (or 26701 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 11405385616 in words is "eleven billion, four hundred five million, three hundred eighty-five thousand, six hundred sixteen".