164406623223212 has 12 divisors (see below), whose sum is σ = 295487579577120. Its totient is φ = 79981600486896.

The previous prime is 164406623223127. The next prime is 164406623223253. The reversal of 164406623223212 is 212322326604461.

It is a super-3 number, since 3×164406623223212³ (a number of 44 digits) contains 333 as substring.

It is an unprimeable number.

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, 555427781012 + ... + 555427781307.

It is an arithmetic number, because the mean of its divisors is an integer number (24623964964760).

Almost surely, 2^{164406623223212} is an apocalyptic number.

It is an amenable number.

164406623223212 is a deficient number, since it is larger than the sum of its proper divisors (131080956353908).

164406623223212 is a wasteful number, since it uses less digits than its factorization.

164406623223212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110855562360 (or 1110855562358 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 44.

Adding to 164406623223212 its reverse (212322326604461), we get a palindrome (376728949827673).

The spelling of 164406623223212 in words is "one hundred sixty-four trillion, four hundred six billion, six hundred twenty-three million, two hundred twenty-three thousand, two hundred twelve".