13856318784 has 1176 divisors, whose sum is σ = 56968034400. Its totient is φ = 3292047360.

The previous prime is 13856318747. The next prime is 13856318797. The reversal of 13856318784 is 48781365831.

It is a happy number.

13856318784 is a `hidden beast` number, since 1 + 3 + 8 + 563 + 1 + 8 + 78 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (1176).

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

It is a self number, because there is not a number n which added to its sum of digits gives 13856318784.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 477804082 + ... + 477804110.

Almost surely, 2^13856318784 is an apocalyptic number.

13856318784 is a gapful number since it is divisible by the number (14) 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 13856318784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28484017200).

13856318784 is an abundant number, since it is smaller than the sum of its proper divisors (43111715616).

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

13856318784 is a wasteful number, since it uses less digits than its factorization.

13856318784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 71 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The spelling of 13856318784 in words is "thirteen billion, eight hundred fifty-six million, three hundred eighteen thousand, seven hundred eighty-four".