163444645223511 has 8 divisors (see below), whose sum is σ = 218712930793584. Its totient is φ = 108569728234560.

The previous prime is 163444645223441. The next prime is 163444645223579. The reversal of 163444645223511 is 115322546444361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 163444645223511 - 2¹¹ = 163444645221463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163444645233511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98342144310 + ... + 98342145971.

It is an arithmetic number, because the mean of its divisors is an integer number (27339116349198).

Almost surely, 2^{163444645223511} is an apocalyptic number.

163444645223511 is a deficient number, since it is larger than the sum of its proper divisors (55268285570073).

163444645223511 is a wasteful number, since it uses less digits than its factorization.

163444645223511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196684290561.

The product of its digits is 8294400, while the sum is 51.

The spelling of 163444645223511 in words is "one hundred sixty-three trillion, four hundred forty-four billion, six hundred forty-five million, two hundred twenty-three thousand, five hundred eleven".