13224313451644 has 6 divisors (see below), whose sum is σ = 23142548540384. Its totient is φ = 6612156725820.

The previous prime is 13224313451611. The next prime is 13224313451647. The reversal of 13224313451644 is 44615431342231.

It is a self number, because there is not a number n which added to its sum of digits gives 13224313451644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13224313451647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1653039181452 + ... + 1653039181459.

Almost surely, 2^{13224313451644} is an apocalyptic number.

It is an amenable number.

13224313451644 is a deficient number, since it is larger than the sum of its proper divisors (9918235088740).

13224313451644 is a wasteful number, since it uses less digits than its factorization.

13224313451644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3306078362915 (or 3306078362913 counting only the distinct ones).

The product of its digits is 829440, while the sum is 43.

Adding to 13224313451644 its reverse (44615431342231), we get a palindrome (57839744793875).

The spelling of 13224313451644 in words is "thirteen trillion, two hundred twenty-four billion, three hundred thirteen million, four hundred fifty-one thousand, six hundred forty-four".