13440704768 has 18 divisors (see below), whose sum is σ = 26828907294. Its totient is φ = 6720352256.

The previous prime is 13440704743. The next prime is 13440704773. The reversal of 13440704768 is 86740704431.

It can be written as a sum of positive squares in only one way, i.e., 9237516544 + 4203188224 = 96112^2 + 64832^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26251121 + ... + 26251632.

Almost surely, 2^13440704768 is an apocalyptic number.

It is an amenable number.

13440704768 is a deficient number, since it is larger than the sum of its proper divisors (13388202526).

13440704768 is an frugal number, since it uses more digits than its factorization.

13440704768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52502769 (or 52502755 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 44.

The spelling of 13440704768 in words is "thirteen billion, four hundred forty million, seven hundred four thousand, seven hundred sixty-eight".