505687883218 has 12 divisors (see below), whose sum is σ = 882373755582. Its totient is φ = 216723378480.

The previous prime is 505687883209. The next prime is 505687883227. The reversal of 505687883218 is 812388786505.

It is an interprime number because it is at equal distance from previous prime (505687883209) and next prime (505687883227).

It can be written as a sum of positive squares in only one way, i.e., 495808914769 + 9878968449 = 704137^2 + 99393^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2580040123 + ... + 2580040318.

Almost surely, 2^505687883218 is an apocalyptic number.

505687883218 is a deficient number, since it is larger than the sum of its proper divisors (376685872364).

505687883218 is a wasteful number, since it uses less digits than its factorization.

505687883218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5160080457 (or 5160080450 counting only the distinct ones).

The product of its (nonzero) digits is 25804800, while the sum is 61.

The spelling of 505687883218 in words is "five hundred five billion, six hundred eighty-seven million, eight hundred eighty-three thousand, two hundred eighteen".