207165206166 has 64 divisors (see below), whose sum is σ = 452971284480. Its totient is φ = 62880238080.

The previous prime is 207165206159. The next prime is 207165206167. The reversal of 207165206166 is 661602561702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207165206167) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19058265 + ... + 19069131.

It is an arithmetic number, because the mean of its divisors is an integer number (7077676320).

Almost surely, 2^207165206166 is an apocalyptic number.

207165206166 is an abundant number, since it is smaller than the sum of its proper divisors (245806078314).

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

207165206166 is a wasteful number, since it uses less digits than its factorization.

207165206166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16949.

The product of its (nonzero) digits is 181440, while the sum is 42.

Adding to 207165206166 its reverse (661602561702), we get a palindrome (868767767868).

The spelling of 207165206166 in words is "two hundred seven billion, one hundred sixty-five million, two hundred six thousand, one hundred sixty-six".