665000556056 has 16 divisors (see below), whose sum is σ = 1320221692440. Its totient is φ = 312941438080.

The previous prime is 665000555993. The next prime is 665000556061. The reversal of 665000556056 is 650655000566.

665000556056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 665000555998 and 665000556016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2444854850 + ... + 2444855121.

Almost surely, 2^665000556056 is an apocalyptic number.

It is an amenable number.

665000556056 is a deficient number, since it is larger than the sum of its proper divisors (655221136384).

665000556056 is a wasteful number, since it uses less digits than its factorization.

665000556056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4889709994 (or 4889709990 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 44.

The spelling of 665000556056 in words is "six hundred sixty-five billion, five hundred fifty-six thousand, fifty-six".