163266643432 has 32 divisors (see below), whose sum is σ = 307877070600. Its totient is φ = 81167155200.

The previous prime is 163266643333. The next prime is 163266643447. The reversal of 163266643432 is 234346662361.

It can be written as a sum of positive squares in 4 ways, for example, as 159627417156 + 3639226276 = 399534^2 + 60326^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1169794 + ... + 1301902.

Almost surely, 2^163266643432 is an apocalyptic number.

It is an amenable number.

163266643432 is a deficient number, since it is larger than the sum of its proper divisors (144610427168).

163266643432 is a wasteful number, since it uses less digits than its factorization.

163266643432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132997 (or 132993 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 46.

The spelling of 163266643432 in words is "one hundred sixty-three billion, two hundred sixty-six million, six hundred forty-three thousand, four hundred thirty-two".