13866784056 has 24 divisors (see below), whose sum is σ = 37555873680. Its totient is φ = 4622261328.

The previous prime is 13866784051. The next prime is 13866784097. The reversal of 13866784056 is 65048766831.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×13866784056² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13866783993 and 13866784011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13866784051) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 96297040 + ... + 96297183.

It is an arithmetic number, because the mean of its divisors is an integer number (1564828070).

Almost surely, 2^13866784056 is an apocalyptic number.

It is an amenable number.

13866784056 is an abundant number, since it is smaller than the sum of its proper divisors (23689089624).

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

13866784056 is a wasteful number, since it uses less digits than its factorization.

13866784056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192594235 (or 192594228 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 13866784056 in words is "thirteen billion, eight hundred sixty-six million, seven hundred eighty-four thousand, fifty-six".