163866451200 has 216 divisors, whose sum is σ = 541572108000. Its totient is φ = 43634810880.

The previous prime is 163866451181. The next prime is 163866451241. The reversal of 163866451200 is 2154668361.

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, 14183026 + ... + 14194574.

Almost surely, 2^163866451200 is an apocalyptic number.

163866451200 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 163866451200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270786054000).

163866451200 is an abundant number, since it is smaller than the sum of its proper divisors (377705656800).

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

163866451200 is a wasteful number, since it uses less digits than its factorization.

163866451200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12317 (or 12298 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 163866451200 in words is "one hundred sixty-three billion, eight hundred sixty-six million, four hundred fifty-one thousand, two hundred".