163857481200 has 960 divisors, whose sum is σ = 694355558400. Its totient is φ = 35912678400.

The previous prime is 163857481129. The next prime is 163857481213. The reversal of 163857481200 is 2184758361.

163857481200 is a `hidden beast` number, since 1 + 63 + 8 + 574 + 8 + 12 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 325760149 + ... + 325760651.

It is an arithmetic number, because the mean of its divisors is an integer number (723287040).

Almost surely, 2^163857481200 is an apocalyptic number.

163857481200 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 163857481200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (347177779200).

163857481200 is an abundant number, since it is smaller than the sum of its proper divisors (530498077200).

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

163857481200 is a wasteful number, since it uses less digits than its factorization.

163857481200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707 (or 690 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 163857481200 in words is "one hundred sixty-three billion, eight hundred fifty-seven million, four hundred eighty-one thousand, two hundred".