550205511166 has 4 divisors (see below), whose sum is σ = 825308266752. Its totient is φ = 275102755582.

The previous prime is 550205511151. The next prime is 550205511197. The reversal of 550205511166 is 661115502055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 661115502055 = 5 ⋅132223100411.

It is a super-2 number, since 2×550205511166² (a number of 24 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 as a sum of consecutive naturals, namely, 137551377790 + ... + 137551377793.

It is an arithmetic number, because the mean of its divisors is an integer number (206327066688).

Almost surely, 2^550205511166 is an apocalyptic number.

550205511166 is a deficient number, since it is larger than the sum of its proper divisors (275102755586).

550205511166 is a wasteful number, since it uses less digits than its factorization.

550205511166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275102755585.

The product of its (nonzero) digits is 45000, while the sum is 37.

The spelling of 550205511166 in words is "five hundred fifty billion, two hundred five million, five hundred eleven thousand, one hundred sixty-six".