13321124784 has 160 divisors (see below), whose sum is σ = 42420499200. Its totient is φ = 3968202240.

The previous prime is 13321124779. The next prime is 13321124801. The reversal of 13321124784 is 48742112331.

13321124784 is a `hidden beast` number, since 1 + 332 + 1 + 1 + 247 + 84 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 256612 + ... + 304124.

It is an arithmetic number, because the mean of its divisors is an integer number (265128120).

Almost surely, 2^13321124784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13321124784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21210249600).

13321124784 is an abundant number, since it is smaller than the sum of its proper divisors (29099374416).

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

13321124784 is a wasteful number, since it uses less digits than its factorization.

13321124784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47600 (or 47588 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The spelling of 13321124784 in words is "thirteen billion, three hundred twenty-one million, one hundred twenty-four thousand, seven hundred eighty-four".