13299728881320 has 320 divisors, whose sum is σ = 51129932071680. Its totient is φ = 3037433831424.

The previous prime is 13299728881301. The next prime is 13299728881333. The reversal of 13299728881320 is 2318882799231.

13299728881320 is a `hidden beast` number, since 1 + 3 + 2 + 99 + 72 + 88 + 81 + 320 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 27360637 + ... + 27842483.

It is an arithmetic number, because the mean of its divisors is an integer number (159781037724).

Almost surely, 2^{13299728881320} is an apocalyptic number.

13299728881320 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 13299728881320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25564966035840).

13299728881320 is an abundant number, since it is smaller than the sum of its proper divisors (37830203190360).

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

13299728881320 is a wasteful number, since it uses less digits than its factorization.

13299728881320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483094 (or 483081 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 63.

The spelling of 13299728881320 in words is "thirteen trillion, two hundred ninety-nine billion, seven hundred twenty-eight million, eight hundred eighty-one thousand, three hundred twenty".