164662208217 has 96 divisors (see below), whose sum is σ = 261732598400. Its totient is φ = 99743529600.

The previous prime is 164662208213. The next prime is 164662208237. The reversal of 164662208217 is 712802266461.

164662208217 is a `hidden beast` number, since 1 + 6 + 4 + 6 + 622 + 0 + 8 + 2 + 17 = 666.

It is not a de Polignac number, because 164662208217 - 2² = 164662208213 is a prime.

It is a super-2 number, since 2×164662208217² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (164662208213) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 497468742 + ... + 497469072.

Almost surely, 2^164662208217 is an apocalyptic number.

It is an amenable number.

164662208217 is a deficient number, since it is larger than the sum of its proper divisors (97070390183).

164662208217 is a wasteful number, since it uses less digits than its factorization.

164662208217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696 (or 667 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 164662208217 in words is "one hundred sixty-four billion, six hundred sixty-two million, two hundred eight thousand, two hundred seventeen".