166868516852 has 48 divisors (see below), whose sum is σ = 303298732800. Its totient is φ = 80235281280.

The previous prime is 166868516851. The next prime is 166868516891. The reversal of 166868516852 is 258615868661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166868516851) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 65617493 + ... + 65620035.

It is an arithmetic number, because the mean of its divisors is an integer number (6318723600).

Almost surely, 2^166868516852 is an apocalyptic number.

It is an amenable number.

166868516852 is a deficient number, since it is larger than the sum of its proper divisors (136430215948).

166868516852 is a wasteful number, since it uses less digits than its factorization.

166868516852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4616 (or 4614 counting only the distinct ones).

The product of its digits is 33177600, while the sum is 62.

The spelling of 166868516852 in words is "one hundred sixty-six billion, eight hundred sixty-eight million, five hundred sixteen thousand, eight hundred fifty-two".