168866985924 has 336 divisors, whose sum is σ = 549109209600. Its totient is φ = 44227088640.

The previous prime is 168866985907. The next prime is 168866985961. The reversal of 168866985924 is 429589668861.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 39535909 + ... + 39540179.

It is an arithmetic number, because the mean of its divisors is an integer number (1634253600).

Almost surely, 2^168866985924 is an apocalyptic number.

168866985924 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168866985924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274554604800).

168866985924 is an abundant number, since it is smaller than the sum of its proper divisors (380242223676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168866985924 is a wasteful number, since it uses less digits than its factorization.

168866985924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4462 (or 4445 counting only the distinct ones).

The product of its digits is 358318080, while the sum is 72.

The spelling of 168866985924 in words is "one hundred sixty-eight billion, eight hundred sixty-six million, nine hundred eighty-five thousand, nine hundred twenty-four".