164642817163 has 8 divisors (see below), whose sum is σ = 179624149056. Its totient is φ = 149663785800.

The previous prime is 164642817139. The next prime is 164642817173. The reversal of 164642817163 is 361718246461.

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

It is a cyclic number.

It is not a de Polignac number, because 164642817163 - 2²⁵ = 164609262731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164642817173) by changing a digit.

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, 423753 + ... + 713338.

It is an arithmetic number, because the mean of its divisors is an integer number (22453018632).

Almost surely, 2^164642817163 is an apocalyptic number.

164642817163 is a deficient number, since it is larger than the sum of its proper divisors (14981331893).

164642817163 is a wasteful number, since it uses less digits than its factorization.

164642817163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150265.

The product of its digits is 1161216, while the sum is 49.

The spelling of 164642817163 in words is "one hundred sixty-four billion, six hundred forty-two million, eight hundred seventeen thousand, one hundred sixty-three".