17730704672 has 18 divisors (see below), whose sum is σ = 34908807843. Its totient is φ = 8864975712.

The previous prime is 17730704671. The next prime is 17730704681. The reversal of 17730704672 is 27640703771.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 8865352336 + 8865352336 = 94156^2 + 94156^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=94156.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17730704671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 741479 + ... + 765017.

Almost surely, 2^17730704672 is an apocalyptic number.

It is an amenable number.

17730704672 is a deficient number, since it is larger than the sum of its proper divisors (17178103171).

17730704672 is an frugal number, since it uses more digits than its factorization.

17730704672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47088 (or 23541 counting only the distinct ones).

The product of its (nonzero) digits is 345744, while the sum is 44.

Subtracting 17730704672 from its reverse (27640703771), we obtain a palindrome (9909999099).

The spelling of 17730704672 in words is "seventeen billion, seven hundred thirty million, seven hundred four thousand, six hundred seventy-two".