13656856069 has 8 divisors (see below), whose sum is σ = 13815360000. Its totient is φ = 13498464672.

The previous prime is 13656856039. The next prime is 13656856079. The reversal of 13656856069 is 96065865631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13656856069 - 2²⁹ = 13119985157 is a prime.

It is a super-2 number, since 2×13656856069² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13656856019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229582 + ... + 282880.

It is an arithmetic number, because the mean of its divisors is an integer number (1726920000).

Almost surely, 2^13656856069 is an apocalyptic number.

It is an amenable number.

13656856069 is a deficient number, since it is larger than the sum of its proper divisors (158503931).

13656856069 is an equidigital number, since it uses as much as digits as its factorization.

13656856069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56267.

The product of its (nonzero) digits is 6998400, while the sum is 55.

The spelling of 13656856069 in words is "thirteen billion, six hundred fifty-six million, eight hundred fifty-six thousand, sixty-nine".