12055161616 has 15 divisors (see below), whose sum is σ = 23357726581. Its totient is φ = 6027361216.

The previous prime is 12055161589. The next prime is 12055161619. The reversal of 12055161616 is 61616155021.

The square root of 12055161616 is 109796.

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

It can be written as a sum of positive squares in only one way, i.e., 9025760016 + 3029401600 = 95004^2 + 55040^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12055161619) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 425460 + ... + 452908.

Almost surely, 2^12055161616 is an apocalyptic number.

12055161616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

12055161616 is the 109796-th square number.

It is an amenable number.

12055161616 is a deficient number, since it is larger than the sum of its proper divisors (11302564965).

12055161616 is an frugal number, since it uses more digits than its factorization.

12055161616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54906 (or 27451 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 34.

The spelling of 12055161616 in words is "twelve billion, fifty-five million, one hundred sixty-one thousand, six hundred sixteen".