163568681472 has 80 divisors (see below), whose sum is σ = 498008250432. Its totient is φ = 46733905920.

The previous prime is 163568681467. The next prime is 163568681473. The reversal of 163568681472 is 274186865361.

It is not an unprimeable number, because it can be changed into a prime (163568681473) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7595679 + ... + 7617182.

Almost surely, 2^163568681472 is an apocalyptic number.

163568681472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

163568681472 is an abundant number, since it is smaller than the sum of its proper divisors (334439568960).

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

163568681472 is an equidigital number, since it uses as much as digits as its factorization.

163568681472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15212889 (or 15212873 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 57.

The spelling of 163568681472 in words is "one hundred sixty-three billion, five hundred sixty-eight million, six hundred eighty-one thousand, four hundred seventy-two".