13355440520520 has 256 divisors, whose sum is σ = 46917022279680. Its totient is φ = 2977574860800.

The previous prime is 13355440520483. The next prime is 13355440520551. The reversal of 13355440520520 is 2502504455331.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 169784319 + ... + 169862961.

It is an arithmetic number, because the mean of its divisors is an integer number (183269618280).

Almost surely, 2^{13355440520520} is an apocalyptic number.

13355440520520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13355440520520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23458511139840).

13355440520520 is an abundant number, since it is smaller than the sum of its proper divisors (33561581759160).

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

13355440520520 is a wasteful number, since it uses less digits than its factorization.

13355440520520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83636 (or 83632 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 39.

Adding to 13355440520520 its reverse (2502504455331), we get a palindrome (15857944975851).

The spelling of 13355440520520 in words is "thirteen trillion, three hundred fifty-five billion, four hundred forty million, five hundred twenty thousand, five hundred twenty".