13943187216 has 120 divisors (see below), whose sum is σ = 44808106304. Its totient is φ = 3964826880.

The previous prime is 13943187191. The next prime is 13943187253. The reversal of 13943187216 is 61278134931.

13943187216 is a `hidden beast` number, since 139 + 431 + 8 + 72 + 16 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179910 + ... + 245466.

Almost surely, 2^13943187216 is an apocalyptic number.

13943187216 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 13943187216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22404053152).

13943187216 is an abundant number, since it is smaller than the sum of its proper divisors (30864919088).

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

13943187216 is a wasteful number, since it uses less digits than its factorization.

13943187216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65789 (or 65780 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The spelling of 13943187216 in words is "thirteen billion, nine hundred forty-three million, one hundred eighty-seven thousand, two hundred sixteen".