17668609356 has 24 divisors (see below), whose sum is σ = 42185518144. Its totient is φ = 5752570320.

The previous prime is 17668609351. The next prime is 17668609367. The reversal of 17668609356 is 65390686671.

It is a junction number, because it is equal to n+sod(n) for n = 17668609296 and 17668609305.

It is not an unprimeable number, because it can be changed into a prime (17668609351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17120230 + ... + 17121261.

Almost surely, 2^17668609356 is an apocalyptic number.

It is an amenable number.

17668609356 is an abundant number, since it is smaller than the sum of its proper divisors (24516908788).

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

17668609356 is a wasteful number, since it uses less digits than its factorization.

17668609356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34241541 (or 34241539 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 57.

The spelling of 17668609356 in words is "seventeen billion, six hundred sixty-eight million, six hundred nine thousand, three hundred fifty-six".