13856621656 has 16 divisors (see below), whose sum is σ = 26683359840. Its totient is φ = 6741059040.

The previous prime is 13856621651. The next prime is 13856621677. The reversal of 13856621656 is 65612665831.

13856621656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13856621651) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 23406160 + ... + 23406751.

It is an arithmetic number, because the mean of its divisors is an integer number (1667709990).

Almost surely, 2^13856621656 is an apocalyptic number.

It is an amenable number.

13856621656 is a deficient number, since it is larger than the sum of its proper divisors (12826738184).

13856621656 is a wasteful number, since it uses less digits than its factorization.

13856621656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46812954 (or 46812950 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 49.

The spelling of 13856621656 in words is "thirteen billion, eight hundred fifty-six million, six hundred twenty-one thousand, six hundred fifty-six".