505116065666 has 8 divisors (see below), whose sum is σ = 757681311504. Its totient is φ = 252555628500.

The previous prime is 505116065647. The next prime is 505116065669. The reversal of 505116065666 is 666560611505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×505116065666³ (a number of 36 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 505116065666.

It is not an unprimeable number, because it can be changed into a prime (505116065669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 926960 + ... + 1367291.

It is an arithmetic number, because the mean of its divisors is an integer number (94710163938).

Almost surely, 2^505116065666 is an apocalyptic number.

505116065666 is a deficient number, since it is larger than the sum of its proper divisors (252565245838).

505116065666 is a wasteful number, since it uses less digits than its factorization.

505116065666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2404336.

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 505116065666 in words is "five hundred five billion, one hundred sixteen million, sixty-five thousand, six hundred sixty-six".