163855391710752 has 576 divisors, whose sum is σ = 546250952991744. Its totient is φ = 45618633768960.

The previous prime is 163855391710691. The next prime is 163855391710753. The reversal of 163855391710752 is 257017193558361.

It is a happy number.

163855391710752 is a `hidden beast` number, since 1 + 6 + 3 + 8 + 5 + 539 + 17 + 10 + 75 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 163855391710752.

It is not an unprimeable number, because it can be changed into a prime (163855391710753) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 50934220248 + ... + 50934223464.

It is an arithmetic number, because the mean of its divisors is an integer number (948352348944).

Almost surely, 2^{163855391710752} is an apocalyptic number.

163855391710752 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 163855391710752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273125476495872).

163855391710752 is an abundant number, since it is smaller than the sum of its proper divisors (382395561280992).

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

163855391710752 is a wasteful number, since it uses less digits than its factorization.

163855391710752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5481 (or 5470 counting only the distinct ones).

The product of its (nonzero) digits is 47628000, while the sum is 63.

The spelling of 163855391710752 in words is "one hundred sixty-three trillion, eight hundred fifty-five billion, three hundred ninety-one million, seven hundred ten thousand, seven hundred fifty-two".