13684821696 has 280 divisors, whose sum is σ = 49929227040. Its totient is φ = 3609059328.

The previous prime is 13684821587. The next prime is 13684821719. The reversal of 13684821696 is 69612848631.

13684821696 is a `hidden beast` number, since 1 + 3 + 68 + 482 + 16 + 96 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 457240 + ... + 486248.

It is an arithmetic number, because the mean of its divisors is an integer number (178318668).

Almost surely, 2^13684821696 is an apocalyptic number.

13684821696 is a gapful number since it is divisible by the number (16) 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 13684821696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24964613520).

13684821696 is an abundant number, since it is smaller than the sum of its proper divisors (36244405344).

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

13684821696 is a wasteful number, since it uses less digits than its factorization.

13684821696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29053 (or 29034 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The spelling of 13684821696 in words is "thirteen billion, six hundred eighty-four million, eight hundred twenty-one thousand, six hundred ninety-six".