163345302720 has 168 divisors, whose sum is σ = 568153478880. Its totient is φ = 43069255680.

The previous prime is 163345302713. The next prime is 163345302773. The reversal of 163345302720 is 27203543361.

163345302720 is a `hidden beast` number, since 1 + 6 + 3 + 345 + 302 + 7 + 2 + 0 = 666.

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 23 ways as a sum of consecutive naturals, for example, 62316 + ... + 574955.

Almost surely, 2^163345302720 is an apocalyptic number.

163345302720 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 163345302720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284076739440).

163345302720 is an abundant number, since it is smaller than the sum of its proper divisors (404808176160).

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

163345302720 is a wasteful number, since it uses less digits than its factorization.

163345302720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637383 (or 637370 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 36.

The spelling of 163345302720 in words is "one hundred sixty-three billion, three hundred forty-five million, three hundred two thousand, seven hundred twenty".