12355201644 has 36 divisors (see below), whose sum is σ = 29857204104. Its totient is φ = 3976383488.

The previous prime is 12355201643. The next prime is 12355201693. The reversal of 12355201644 is 44610255321.

12355201644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12355201643) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 602037 + ... + 622220.

Almost surely, 2^12355201644 is an apocalyptic number.

It is an amenable number.

12355201644 is an abundant number, since it is smaller than the sum of its proper divisors (17502002460).

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

12355201644 is a wasteful number, since it uses less digits than its factorization.

12355201644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224322 (or 1224291 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 12355201644 its reverse (44610255321), we get a palindrome (56965456965).

The spelling of 12355201644 in words is "twelve billion, three hundred fifty-five million, two hundred one thousand, six hundred forty-four".