13384479797568 has 392 divisors, whose sum is σ = 43486399143360. Its totient is φ = 4051726479360.

The previous prime is 13384479797537. The next prime is 13384479797581. The reversal of 13384479797568 is 86579797448331.

13384479797568 is a `hidden beast` number, since 1 + 3 + 3 + 8 + 4 + 47 + 9 + 7 + 9 + 7 + 568 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 517822021 + ... + 517847867.

Almost surely, 2^{13384479797568} is an apocalyptic number.

13384479797568 is a gapful number since it is divisible by the number (18) 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 13384479797568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21743199571680).

13384479797568 is an abundant number, since it is smaller than the sum of its proper divisors (30101919345792).

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

13384479797568 is a wasteful number, since it uses less digits than its factorization.

13384479797568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26897 (or 26872 counting only the distinct ones).

The product of its digits is 7681443840, while the sum is 81.

The spelling of 13384479797568 in words is "thirteen trillion, three hundred eighty-four billion, four hundred seventy-nine million, seven hundred ninety-seven thousand, five hundred sixty-eight".