168066488650 has 24 divisors (see below), whose sum is σ = 320228152524. Its totient is φ = 65586921600.

The previous prime is 168066488621. The next prime is 168066488693. The reversal of 168066488650 is 56884660861.

It can be written as a sum of positive squares in 6 ways, for example, as 57255396961 + 110811091689 = 239281^2 + 332883^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40989777 + ... + 40993876.

Almost surely, 2^168066488650 is an apocalyptic number.

168066488650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168066488650 is a deficient number, since it is larger than the sum of its proper divisors (152161663874).

168066488650 is a wasteful number, since it uses less digits than its factorization.

168066488650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81983706 (or 81983701 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 58.

The spelling of 168066488650 in words is "one hundred sixty-eight billion, sixty-six million, four hundred eighty-eight thousand, six hundred fifty".