168671853850 has 12 divisors (see below), whose sum is σ = 313729648254. Its totient is φ = 67468741520.

The previous prime is 168671853769. The next prime is 168671853929. The reversal of 168671853850 is 58358176861.

It can be written as a sum of positive squares in 3 ways, for example, as 160354596249 + 8317257601 = 400443^2 + 91199^2 .

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 5 ways as a sum of consecutive naturals, for example, 1686718489 + ... + 1686718588.

Almost surely, 2^168671853850 is an apocalyptic number.

168671853850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168671853850 is a deficient number, since it is larger than the sum of its proper divisors (145057794404).

168671853850 is a wasteful number, since it uses less digits than its factorization.

168671853850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3373437089 (or 3373437084 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 58.

The spelling of 168671853850 in words is "one hundred sixty-eight billion, six hundred seventy-one million, eight hundred fifty-three thousand, eight hundred fifty".