556650665066 has 4 divisors (see below), whose sum is σ = 834975997602. Its totient is φ = 278325332532.

The previous prime is 556650665033. The next prime is 556650665083. The reversal of 556650665066 is 660566056655.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 344779178041 + 211871487025 = 587179^2 + 460295^2 .

It is a super-2 number, since 2×556650665066² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139162666265 + ... + 139162666268.

Almost surely, 2^556650665066 is an apocalyptic number.

556650665066 is a deficient number, since it is larger than the sum of its proper divisors (278325332536).

556650665066 is a wasteful number, since it uses less digits than its factorization.

556650665066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278325332535.

The product of its (nonzero) digits is 29160000, while the sum is 56.

The spelling of 556650665066 in words is "five hundred fifty-six billion, six hundred fifty million, six hundred sixty-five thousand, sixty-six".