168000186664 has 8 divisors (see below), whose sum is σ = 315000350010. Its totient is φ = 84000093328.

The previous prime is 168000186649. The next prime is 168000186667. The reversal of 168000186664 is 466681000861.

168000186664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 157801206564 + 10198980100 = 397242^2 + 100990^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (168000186667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10500011659 + ... + 10500011674.

Almost surely, 2^168000186664 is an apocalyptic number.

It is an amenable number.

168000186664 is a deficient number, since it is larger than the sum of its proper divisors (147000163346).

168000186664 is a wasteful number, since it uses less digits than its factorization.

168000186664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21000023339 (or 21000023335 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 46.

The spelling of 168000186664 in words is "one hundred sixty-eight billion, one hundred eighty-six thousand, six hundred sixty-four".