13144305220520 has 64 divisors (see below), whose sum is σ = 29729983322880. Its totient is φ = 5230186004736.

The previous prime is 13144305220507. The next prime is 13144305220523. The reversal of 13144305220520 is 2502250344131.

It is not an unprimeable number, because it can be changed into a prime (13144305220523) 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, 4700267 + ... + 6955653.

It is an arithmetic number, because the mean of its divisors is an integer number (464530989420).

Almost surely, 2^{13144305220520} is an apocalyptic number.

13144305220520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13144305220520 is an abundant number, since it is smaller than the sum of its proper divisors (16585678102360).

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

13144305220520 is a wasteful number, since it uses less digits than its factorization.

13144305220520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256162 (or 2256158 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 13144305220520 its reverse (2502250344131), we get a palindrome (15646555564651).

The spelling of 13144305220520 in words is "thirteen trillion, one hundred forty-four billion, three hundred five million, two hundred twenty thousand, five hundred twenty".