163421812207368 has 960 divisors, whose sum is σ = 588353521916160. Its totient is φ = 41635192320000.

The previous prime is 163421812207363. The next prime is 163421812207393. The reversal of 163421812207368 is 863702218124361.

163421812207368 is a `hidden beast` number, since 1 + 6 + 3 + 42 + 18 + 1 + 220 + 7 + 368 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (163421812207363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 1513797793 + ... + 1513905743.

It is an arithmetic number, because the mean of its divisors is an integer number (612868251996).

Almost surely, 2^{163421812207368} is an apocalyptic number.

163421812207368 is a gapful number since it is divisible by the number (18) 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 163421812207368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (294176760958080).

163421812207368 is an abundant number, since it is smaller than the sum of its proper divisors (424931709708792).

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

163421812207368 is a wasteful number, since it uses less digits than its factorization.

163421812207368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108072 (or 108028 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 163421812207368 in words is "one hundred sixty-three trillion, four hundred twenty-one billion, eight hundred twelve million, two hundred seven thousand, three hundred sixty-eight".