18606816568 has 16 divisors (see below), whose sum is σ = 35068549680. Its totient is φ = 9255203328.

The previous prime is 18606816443. The next prime is 18606816577. The reversal of 18606816568 is 86561860681.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6023980 + ... + 6027067.

It is an arithmetic number, because the mean of its divisors is an integer number (2191784355).

Almost surely, 2^18606816568 is an apocalyptic number.

It is an amenable number.

18606816568 is a deficient number, since it is larger than the sum of its proper divisors (16461733112).

18606816568 is a wasteful number, since it uses less digits than its factorization.

18606816568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12051246 (or 12051242 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 55.

The spelling of 18606816568 in words is "eighteen billion, six hundred six million, eight hundred sixteen thousand, five hundred sixty-eight".