505355041666 has 4 divisors (see below), whose sum is σ = 758032562502. Its totient is φ = 252677520832.

The previous prime is 505355041661. The next prime is 505355041673. The reversal of 505355041666 is 666140553505.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 502730631225 + 2624410441 = 709035^2 + 51229^2 .

It is not an unprimeable number, because it can be changed into a prime (505355041661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126338760415 + ... + 126338760418.

Almost surely, 2^505355041666 is an apocalyptic number.

505355041666 is a deficient number, since it is larger than the sum of its proper divisors (252677520836).

505355041666 is a wasteful number, since it uses less digits than its factorization.

505355041666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252677520835.

The product of its (nonzero) digits is 1620000, while the sum is 46.

The spelling of 505355041666 in words is "five hundred five billion, three hundred fifty-five million, forty-one thousand, six hundred sixty-six".