163013240644321 has 16 divisors (see below), whose sum is σ = 170765984073600. Its totient is φ = 155315955232768.

The previous prime is 163013240644273. The next prime is 163013240644343. The reversal of 163013240644321 is 123446042310361.

It is not a de Polignac number, because 163013240644321 - 2¹⁹ = 163013240120033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163013240684321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337743915 + ... + 338226223.

It is an arithmetic number, because the mean of its divisors is an integer number (10672874004600).

Almost surely, 2^{163013240644321} is an apocalyptic number.

It is an amenable number.

163013240644321 is a deficient number, since it is larger than the sum of its proper divisors (7752743429279).

163013240644321 is a wasteful number, since it uses less digits than its factorization.

163013240644321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539768.

The product of its (nonzero) digits is 248832, while the sum is 40.

Adding to 163013240644321 its reverse (123446042310361), we get a palindrome (286459282954682).

The spelling of 163013240644321 in words is "one hundred sixty-three trillion, thirteen billion, two hundred forty million, six hundred forty-four thousand, three hundred twenty-one".