13220244053504 has 160 divisors (see below), whose sum is σ = 28872257816160. Its totient is φ = 6022815547392.

The previous prime is 13220244053459. The next prime is 13220244053551. The reversal of 13220244053504 is 40535044202231.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42136442 + ... + 42449030.

It is an arithmetic number, because the mean of its divisors is an integer number (180451611351).

Almost surely, 2^{13220244053504} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13220244053504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14436128908080).

13220244053504 is an abundant number, since it is smaller than the sum of its proper divisors (15652013762656).

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

13220244053504 is a wasteful number, since it uses less digits than its factorization.

13220244053504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312780 (or 312764 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 13220244053504 its reverse (40535044202231), we get a palindrome (53755288255735).

The spelling of 13220244053504 in words is "thirteen trillion, two hundred twenty billion, two hundred forty-four million, fifty-three thousand, five hundred four".