504799964866 has 16 divisors (see below), whose sum is σ = 758835999864. Its totient is φ = 251855138304.

The previous prime is 504799964861. The next prime is 504799964869. The reversal of 504799964866 is 668469997405.

504799964866 is a nontrivial binomial coefficient, being equal to C(1004789, 2).

It can be written as a sum of positive squares in 4 ways, for example, as 500314314241 + 4485650625 = 707329^2 + 66975^2 .

It is not an unprimeable number, because it can be changed into a prime (504799964861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1883980 + ... + 2135176.

Almost surely, 2^504799964866 is an apocalyptic number.

504799964866 is the 1004788-th triangular number.

504799964866 is the 334930-th centered nonagonal number.

504799964866 is a deficient number, since it is larger than the sum of its proper divisors (254036034998).

504799964866 is a wasteful number, since it uses less digits than its factorization.

504799964866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253365.

The product of its (nonzero) digits is 705438720, while the sum is 73.

The spelling of 504799964866 in words is "five hundred four billion, seven hundred ninety-nine million, nine hundred sixty-four thousand, eight hundred sixty-six".