505546665664 has 28 divisors (see below), whose sum is σ = 1003384798408. Its totient is φ = 252725299200.

The previous prime is 505546665629. The next prime is 505546665671. The reversal of 505546665664 is 466566645505.

It is a junction number, because it is equal to n+sod(n) for n = 505546665599 and 505546665608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409902 + ... + 1085869.

Almost surely, 2^505546665664 is an apocalyptic number.

It is an amenable number.

505546665664 is a deficient number, since it is larger than the sum of its proper divisors (497838132744).

505546665664 is a wasteful number, since it uses less digits than its factorization.

505546665664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501064 (or 1501054 counting only the distinct ones).

The product of its (nonzero) digits is 77760000, while the sum is 58.

The spelling of 505546665664 in words is "five hundred five billion, five hundred forty-six million, six hundred sixty-five thousand, six hundred sixty-four".