550005121066 has 8 divisors (see below), whose sum is σ = 825974867844. Its totient is φ = 274680165120.

The previous prime is 550005121063. The next prime is 550005121073. The reversal of 550005121066 is 660121500055.

It can be written as a sum of positive squares in 2 ways, for example, as 547927128841 + 2077992225 = 740221^2 + 45585^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (550005121063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161195575 + ... + 161198986.

Almost surely, 2^550005121066 is an apocalyptic number.

550005121066 is a deficient number, since it is larger than the sum of its proper divisors (275969746778).

550005121066 is a wasteful number, since it uses less digits than its factorization.

550005121066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322395416.

The product of its (nonzero) digits is 9000, while the sum is 31.

The spelling of 550005121066 in words is "five hundred fifty billion, five million, one hundred twenty-one thousand, sixty-six".