165000640208 has 40 divisors (see below), whose sum is σ = 324984306816. Its totient is φ = 81134179200.

The previous prime is 165000640183. The next prime is 165000640229. The reversal of 165000640208 is 802046000561.

It is a super-2 number, since 2×165000640208² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8210813 + ... + 8230883.

Almost surely, 2^165000640208 is an apocalyptic number.

It is an amenable number.

165000640208 is a deficient number, since it is larger than the sum of its proper divisors (159983666608).

165000640208 is a wasteful number, since it uses less digits than its factorization.

165000640208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28563 (or 28557 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

Adding to 165000640208 its reverse (802046000561), we get a palindrome (967046640769).

The spelling of 165000640208 in words is "one hundred sixty-five billion, six hundred forty thousand, two hundred eight".