17678047668 has 24 divisors (see below), whose sum is σ = 41250951168. Its totient is φ = 5892372096.

The previous prime is 17678047663. The next prime is 17678047711. The reversal of 17678047668 is 86674087671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17678047663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374605 + ... + 419147.

It is an arithmetic number, because the mean of its divisors is an integer number (1718789632).

Almost surely, 2^17678047668 is an apocalyptic number.

It is an amenable number.

17678047668 is an abundant number, since it is smaller than the sum of its proper divisors (23572903500).

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

17678047668 is a wasteful number, since it uses less digits than its factorization.

17678047668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77623 (or 77621 counting only the distinct ones).

The product of its (nonzero) digits is 18966528, while the sum is 60.

The spelling of 17678047668 in words is "seventeen billion, six hundred seventy-eight million, forty-seven thousand, six hundred sixty-eight".