13681467840 has 112 divisors (see below), whose sum is σ = 43612490880. Its totient is φ = 3633792000.

The previous prime is 13681467827. The next prime is 13681467851. The reversal of 13681467840 is 4876418631.

13681467840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 13681467840.

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 15 ways as a sum of consecutive naturals, for example, 212571 + ... + 269349.

It is an arithmetic number, because the mean of its divisors is an integer number (389397240).

Almost surely, 2^13681467840 is an apocalyptic number.

13681467840 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 13681467840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21806245440).

13681467840 is an abundant number, since it is smaller than the sum of its proper divisors (29931023040).

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

13681467840 is a wasteful number, since it uses less digits than its factorization.

13681467840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57050 (or 57040 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 13681467840 in words is "thirteen billion, six hundred eighty-one million, four hundred sixty-seven thousand, eight hundred forty".