422471405205 has 18 divisors (see below), whose sum is σ = 732291326754. Its totient is φ = 225315757344.

The previous prime is 422471405183. The next prime is 422471405221. The reversal of 422471405205 is 502504174224.

422471405205 is a `hidden beast` number, since 4 + 2 + 2 + 47 + 1 + 405 + 205 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 10688664996 + 411782740209 = 103386^2 + 641703^2 .

It is not a de Polignac number, because 422471405205 - 2⁵ = 422471405173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 422471405205.

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 4311739 + ... + 4408631.

Almost surely, 2^422471405205 is an apocalyptic number.

422471405205 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

422471405205 is a deficient number, since it is larger than the sum of its proper divisors (309819921549).

422471405205 is an frugal number, since it uses more digits than its factorization.

422471405205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193797 (or 96901 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 36.

Adding to 422471405205 its reverse (502504174224), we get a palindrome (924975579429).

The spelling of 422471405205 in words is "four hundred twenty-two billion, four hundred seventy-one million, four hundred five thousand, two hundred five".