985666809164 has 12 divisors (see below), whose sum is σ = 1731144054864. Its totient is φ = 491054222064.

The previous prime is 985666809133. The next prime is 985666809217. The reversal of 985666809164 is 461908666589.

It is a junction number, because it is equal to n+sod(n) for n = 985666809094 and 985666809103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444794384 + ... + 444796599.

It is an arithmetic number, because the mean of its divisors is an integer number (144262004572).

Almost surely, 2^985666809164 is an apocalyptic number.

It is an amenable number.

985666809164 is a deficient number, since it is larger than the sum of its proper divisors (745477245700).

985666809164 is a wasteful number, since it uses less digits than its factorization.

985666809164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889591264 (or 889591262 counting only the distinct ones).

The product of its (nonzero) digits is 134369280, while the sum is 68.

The spelling of 985666809164 in words is "nine hundred eighty-five billion, six hundred sixty-six million, eight hundred nine thousand, one hundred sixty-four".