163800399312 has 200 divisors, whose sum is σ = 544405736160. Its totient is φ = 47023960320.

The previous prime is 163800399307. The next prime is 163800399337. The reversal of 163800399312 is 213993008361.

163800399312 is a `hidden beast` number, since 1 + 638 + 0 + 0 + 3 + 9 + 9 + 3 + 1 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 31503 + ... + 573230.

Almost surely, 2^163800399312 is an apocalyptic number.

163800399312 is a gapful number since it is divisible by the number (12) 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 163800399312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272202868080).

163800399312 is an abundant number, since it is smaller than the sum of its proper divisors (380605336848).

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

163800399312 is a wasteful number, since it uses less digits than its factorization.

163800399312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604783 (or 604768 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The spelling of 163800399312 in words is "one hundred sixty-three billion, eight hundred million, three hundred ninety-nine thousand, three hundred twelve".