13656008656 has 20 divisors (see below), whose sum is σ = 26460976900. Its totient is φ = 6827369472.

The previous prime is 13656008633. The next prime is 13656008657. The reversal of 13656008656 is 65680065631.

It can be written as a sum of positive squares in 2 ways, for example, as 11012403600 + 2643605056 = 104940^2 + 51416^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13656008657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172000 + ... + 238528.

It is an arithmetic number, because the mean of its divisors is an integer number (1323048845).

Almost surely, 2^13656008656 is an apocalyptic number.

13656008656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13656008656 is a deficient number, since it is larger than the sum of its proper divisors (12804968244).

13656008656 is a wasteful number, since it uses less digits than its factorization.

13656008656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79366 (or 79360 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 13656008656 in words is "thirteen billion, six hundred fifty-six million, eight thousand, six hundred fifty-six".