12563353444 has 12 divisors (see below), whose sum is σ = 22120752304. Its totient is φ = 6243138504.

The previous prime is 12563353427. The next prime is 12563353459. The reversal of 12563353444 is 44435336521.

It is a super-2 number, since 2×12563353444² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12563353397 and 12563353406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9633822 + ... + 9635125.

Almost surely, 2^12563353444 is an apocalyptic number.

It is an amenable number.

12563353444 is a deficient number, since it is larger than the sum of its proper divisors (9557398860).

12563353444 is a wasteful number, since it uses less digits than its factorization.

12563353444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19269114 (or 19269112 counting only the distinct ones).

The product of its digits is 518400, while the sum is 40.

Adding to 12563353444 its reverse (44435336521), we get a palindrome (56998689965).

The spelling of 12563353444 in words is "twelve billion, five hundred sixty-three million, three hundred fifty-three thousand, four hundred forty-four".