164221476317 has 4 divisors (see below), whose sum is σ = 164602501056. Its totient is φ = 163840451580.

The previous prime is 164221476277. The next prime is 164221476359. The reversal of 164221476317 is 713674122461.

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 164221476317 - 2⁶ = 164221476253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164221476017) 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 3 ways as a sum of consecutive naturals, for example, 190511723 + ... + 190512584.

It is an arithmetic number, because the mean of its divisors is an integer number (41150625264).

Almost surely, 2^164221476317 is an apocalyptic number.

It is an amenable number.

164221476317 is a deficient number, since it is larger than the sum of its proper divisors (381024739).

164221476317 is an equidigital number, since it uses as much as digits as its factorization.

164221476317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381024738.

The product of its digits is 338688, while the sum is 44.

Adding to 164221476317 its reverse (713674122461), we get a palindrome (877895598778).

The spelling of 164221476317 in words is "one hundred sixty-four billion, two hundred twenty-one million, four hundred seventy-six thousand, three hundred seventeen".