13318891520 has 384 divisors, whose sum is σ = 37447038720. Its totient is φ = 4498391040.

The previous prime is 13318891493. The next prime is 13318891541. The reversal of 13318891520 is 2519881331.

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 31 ways as a sum of consecutive naturals, for example, 137308112 + ... + 137308208.

It is an arithmetic number, because the mean of its divisors is an integer number (97518330).

Almost surely, 2^13318891520 is an apocalyptic number.

13318891520 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 13318891520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18723519360).

13318891520 is an abundant number, since it is smaller than the sum of its proper divisors (24128147200).

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

13318891520 is a wasteful number, since it uses less digits than its factorization.

13318891520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 41.

The spelling of 13318891520 in words is "thirteen billion, three hundred eighteen million, eight hundred ninety-one thousand, five hundred twenty".