168803919100 has 72 divisors (see below), whose sum is σ = 389801613600. Its totient is φ = 63230238720.

The previous prime is 168803919073. The next prime is 168803919127. The reversal of 168803919100 is 1919308861.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (168803919073) and next prime (168803919127).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88812 + ... + 587788.

It is an arithmetic number, because the mean of its divisors is an integer number (5413911300).

Almost surely, 2^168803919100 is an apocalyptic number.

168803919100 is a gapful number since it is divisible by the number (10) 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 168803919100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194900806800).

168803919100 is an abundant number, since it is smaller than the sum of its proper divisors (220997694500).

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

168803919100 is a wasteful number, since it uses less digits than its factorization.

168803919100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499207 (or 499200 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 46.

The spelling of 168803919100 in words is "one hundred sixty-eight billion, eight hundred three million, nine hundred nineteen thousand, one hundred".