13656647328 has 72 divisors (see below), whose sum is σ = 37834872768. Its totient is φ = 4312614528.

The previous prime is 13656647297. The next prime is 13656647377. The reversal of 13656647328 is 82374665631.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162376 + ... + 231687.

It is an arithmetic number, because the mean of its divisors is an integer number (525484344).

Almost surely, 2^13656647328 is an apocalyptic number.

It is an amenable number.

13656647328 is an abundant number, since it is smaller than the sum of its proper divisors (24178225440).

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

13656647328 is a wasteful number, since it uses less digits than its factorization.

13656647328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394114 (or 394087 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 51.

The spelling of 13656647328 in words is "thirteen billion, six hundred fifty-six million, six hundred forty-seven thousand, three hundred twenty-eight".