163664433065089 has 4 divisors (see below), whose sum is σ = 178543017889200. Its totient is φ = 148785848240980.

The previous prime is 163664433065047. The next prime is 163664433065101. The reversal of 163664433065089 is 980560334466361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 163664433065089 - 2¹¹ = 163664433063041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163664433065089.

It is not an unprimeable number, because it can be changed into a prime (163664433065489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7439292412039 + ... + 7439292412060.

It is an arithmetic number, because the mean of its divisors is an integer number (44635754472300).

Almost surely, 2^{163664433065089} is an apocalyptic number.

It is an amenable number.

163664433065089 is a deficient number, since it is larger than the sum of its proper divisors (14878584824111).

163664433065089 is a wasteful number, since it uses less digits than its factorization.

163664433065089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14878584824110.

The product of its (nonzero) digits is 201553920, while the sum is 64.

The spelling of 163664433065089 in words is "one hundred sixty-three trillion, six hundred sixty-four billion, four hundred thirty-three million, sixty-five thousand, eighty-nine".