164360905212 has 72 divisors (see below), whose sum is σ = 449635436544. Its totient is φ = 46590471648.

The previous prime is 164360905211. The next prime is 164360905283. The reversal of 164360905212 is 212509063461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164360905211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1025818 + ... + 1175169.

Almost surely, 2^164360905212 is an apocalyptic number.

164360905212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

164360905212 is an abundant number, since it is smaller than the sum of its proper divisors (285274531332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164360905212 is a wasteful number, since it uses less digits than its factorization.

164360905212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201135 (or 2201126 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

Adding to 164360905212 its reverse (212509063461), we get a palindrome (376869968673).

The spelling of 164360905212 in words is "one hundred sixty-four billion, three hundred sixty million, nine hundred five thousand, two hundred twelve".