505505555056 has 20 divisors (see below), whose sum is σ = 979499665152. Its totient is φ = 252731447936.

The previous prime is 505505555053. The next prime is 505505555057. The reversal of 505505555056 is 650555505505.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 505505554997 and 505505555015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505505555053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1136701 + ... + 1517596.

Almost surely, 2^505505555056 is an apocalyptic number.

It is an amenable number.

505505555056 is a deficient number, since it is larger than the sum of its proper divisors (473994110096).

505505555056 is a wasteful number, since it uses less digits than its factorization.

505505555056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2666208 (or 2666202 counting only the distinct ones).

The product of its (nonzero) digits is 2343750, while the sum is 46.

The spelling of 505505555056 in words is "five hundred five billion, five hundred five million, five hundred fifty-five thousand, fifty-six".