13318013520 has 1120 divisors, whose sum is σ = 59720820480. Its totient is φ = 2687385600.

The previous prime is 13318013491. The next prime is 13318013531. The reversal of 13318013520 is 2531081331.

13318013520 is a `hidden beast` number, since 133 + 1 + 8 + 0 + 1 + 3 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 131861470 + ... + 131861570.

Almost surely, 2^13318013520 is an apocalyptic number.

13318013520 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 13318013520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29860410240).

13318013520 is an abundant number, since it is smaller than the sum of its proper divisors (46402806960).

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

13318013520 is a wasteful number, since it uses less digits than its factorization.

13318013520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 13318013520 its reverse (2531081331), we get a palindrome (15849094851).

The spelling of 13318013520 in words is "thirteen billion, three hundred eighteen million, thirteen thousand, five hundred twenty".