505551010056 has 16 divisors (see below), whose sum is σ = 1263877525200. Its totient is φ = 168517003344.

The previous prime is 505551009961. The next prime is 505551010067. The reversal of 505551010056 is 650010155505.

It is a junction number, because it is equal to n+sod(n) for n = 505551009999 and 505551010026.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10532312686 + ... + 10532312733.

It is an arithmetic number, because the mean of its divisors is an integer number (78992345325).

Almost surely, 2^505551010056 is an apocalyptic number.

It is an amenable number.

505551010056 is an abundant number, since it is smaller than the sum of its proper divisors (758326515144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505551010056 is a wasteful number, since it uses less digits than its factorization.

505551010056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21064625428 (or 21064625424 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 33.

The spelling of 505551010056 in words is "five hundred five billion, five hundred fifty-one million, ten thousand, fifty-six".