163230815520 has 384 divisors, whose sum is σ = 576905172480. Its totient is φ = 43104337920.

The previous prime is 163230815491. The next prime is 163230815551. The reversal of 163230815520 is 25518032361.

163230815520 is a `hidden beast` number, since 1 + 6 + 3 + 23 + 0 + 81 + 552 + 0 = 666.

163230815520 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 258685605 + ... + 258686235.

It is an arithmetic number, because the mean of its divisors is an integer number (1502357220).

Almost surely, 2^163230815520 is an apocalyptic number.

163230815520 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 163230815520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288452586240).

163230815520 is an abundant number, since it is smaller than the sum of its proper divisors (413674356960).

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

163230815520 is a wasteful number, since it uses less digits than its factorization.

163230815520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145 (or 1131 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 163230815520 its reverse (25518032361), we get a palindrome (188748847881).

The spelling of 163230815520 in words is "one hundred sixty-three billion, two hundred thirty million, eight hundred fifteen thousand, five hundred twenty".