12061320355 has 24 divisors (see below), whose sum is σ = 16844457600. Its totient is φ = 8266769280.

The previous prime is 12061320287. The next prime is 12061320377. The reversal of 12061320355 is 55302316021.

12061320355 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12061320355 - 2¹³ = 12061312163 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 577495 + ... + 598015.

It is an arithmetic number, because the mean of its divisors is an integer number (701852400).

Almost surely, 2^12061320355 is an apocalyptic number.

12061320355 is a deficient number, since it is larger than the sum of its proper divisors (4783137245).

12061320355 is a wasteful number, since it uses less digits than its factorization.

12061320355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22939 (or 22932 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 12061320355 its reverse (55302316021), we get a palindrome (67363636376).

The spelling of 12061320355 in words is "twelve billion, sixty-one million, three hundred twenty thousand, three hundred fifty-five".