164265212205 has 48 divisors (see below), whose sum is σ = 290903768064. Its totient is φ = 85708907520.

The previous prime is 164265212183. The next prime is 164265212233. The reversal of 164265212205 is 502212562461.

164265212205 is a `hidden beast` number, since 1 + 6 + 426 + 5 + 2 + 1 + 220 + 5 = 666.

It is not a de Polignac number, because 164265212205 - 2¹⁴ = 164265195821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164265212205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5604940 + ... + 5634170.

It is an arithmetic number, because the mean of its divisors is an integer number (6060495168).

Almost surely, 2^164265212205 is an apocalyptic number.

164265212205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164265212205 is a deficient number, since it is larger than the sum of its proper divisors (126638555859).

164265212205 is a wasteful number, since it uses less digits than its factorization.

164265212205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31946 (or 31943 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 164265212205 its reverse (502212562461), we get a palindrome (666477774666).

The spelling of 164265212205 in words is "one hundred sixty-four billion, two hundred sixty-five million, two hundred twelve thousand, two hundred five".