118081165258566 has 40 divisors (see below), whose sum is σ = 264613133649744. Its totient is φ = 39356839602000.

The previous prime is 118081165258543. The next prime is 118081165258577. The reversal of 118081165258566 is 665852561180811.

It is a happy number.

118081165258566 is a `hidden beast` number, since 1 + 1 + 8 + 0 + 8 + 1 + 1 + 65 + 2 + 5 + 8 + 566 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 31056810 + ... + 34650941.

Almost surely, 2^{118081165258566} is an apocalyptic number.

118081165258566 is an abundant number, since it is smaller than the sum of its proper divisors (146531968391178).

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

118081165258566 is a wasteful number, since it uses less digits than its factorization.

118081165258566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65718858 (or 65718849 counting only the distinct ones).

The product of its (nonzero) digits is 27648000, while the sum is 63.

The spelling of 118081165258566 in words is "one hundred eighteen trillion, eighty-one billion, one hundred sixty-five million, two hundred fifty-eight thousand, five hundred sixty-six".