12255304644 has 48 divisors (see below), whose sum is σ = 34661471040. Its totient is φ = 3713728320.

The previous prime is 12255304643. The next prime is 12255304651. The reversal of 12255304644 is 44640355221.

12255304644 is a `hidden beast` number, since 1 + 2 + 2 + 5 + 5 + 3 + 0 + 4 + 644 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 12255304599 and 12255304608.

It is not an unprimeable number, because it can be changed into a prime (12255304643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5156769 + ... + 5159144.

It is an arithmetic number, because the mean of its divisors is an integer number (722113980).

Almost surely, 2^12255304644 is an apocalyptic number.

It is an amenable number.

12255304644 is an abundant number, since it is smaller than the sum of its proper divisors (22406166396).

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

12255304644 is a wasteful number, since it uses less digits than its factorization.

12255304644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10315937 (or 10315929 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 12255304644 its reverse (44640355221), we get a palindrome (56895659865).

The spelling of 12255304644 in words is "twelve billion, two hundred fifty-five million, three hundred four thousand, six hundred forty-four".