550005666556 has 18 divisors (see below), whose sum is σ = 994560201600. Its totient is φ = 266131772280.

The previous prime is 550005666523. The next prime is 550005666577. The reversal of 550005666556 is 655666500055.

It is a super-2 number, since 2×550005666556² (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 in 5 ways as a sum of consecutive naturals, for example, 71536956 + ... + 71544643.

Almost surely, 2^550005666556 is an apocalyptic number.

It is an amenable number.

550005666556 is a deficient number, since it is larger than the sum of its proper divisors (444554535044).

550005666556 is a wasteful number, since it uses less digits than its factorization.

550005666556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143081665 (or 143081632 counting only the distinct ones).

The product of its (nonzero) digits is 4050000, while the sum is 49.

The spelling of 550005666556 in words is "five hundred fifty billion, five million, six hundred sixty-six thousand, five hundred fifty-six".