505212200666 has 16 divisors (see below), whose sum is σ = 765518208000. Its totient is φ = 250041660048.

The previous prime is 505212200663. The next prime is 505212200671. The reversal of 505212200666 is 666002212505.

It is not an unprimeable number, because it can be changed into a prime (505212200663) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 86441 + ... + 1008908.

It is an arithmetic number, because the mean of its divisors is an integer number (47844888000).

Almost surely, 2^505212200666 is an apocalyptic number.

505212200666 is a deficient number, since it is larger than the sum of its proper divisors (260306007334).

505212200666 is a wasteful number, since it uses less digits than its factorization.

505212200666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097693.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 505212200666 in words is "five hundred five billion, two hundred twelve million, two hundred thousand, six hundred sixty-six".