12356553644 has 24 divisors (see below), whose sum is σ = 21687695568. Its totient is φ = 6160091840.

The previous prime is 12356553641. The next prime is 12356553673. The reversal of 12356553644 is 44635565321.

It is a junction number, because it is equal to n+sod(n) for n = 12356553595 and 12356553604.

It is not an unprimeable number, because it can be changed into a prime (12356553641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4344887 + ... + 4347729.

It is an arithmetic number, because the mean of its divisors is an integer number (903653982).

Almost surely, 2^12356553644 is an apocalyptic number.

It is an amenable number.

12356553644 is a deficient number, since it is larger than the sum of its proper divisors (9331141924).

12356553644 is a wasteful number, since it uses less digits than its factorization.

12356553644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5665 (or 5663 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 44.

The spelling of 12356553644 in words is "twelve billion, three hundred fifty-six million, five hundred fifty-three thousand, six hundred forty-four".