509868288668 has 12 divisors (see below), whose sum is σ = 893871429192. Its totient is φ = 254476451760.

The previous prime is 509868288647. The next prime is 509868288701. The reversal of 509868288668 is 866882868905.

It is a junction number, because it is equal to n+sod(n) for n = 509868288595 and 509868288604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114420638 + ... + 114425093.

It is an arithmetic number, because the mean of its divisors is an integer number (74489285766).

Almost surely, 2^509868288668 is an apocalyptic number.

It is an amenable number.

509868288668 is a deficient number, since it is larger than the sum of its proper divisors (384003140524).

509868288668 is a wasteful number, since it uses less digits than its factorization.

509868288668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228846292 (or 228846290 counting only the distinct ones).

The product of its (nonzero) digits is 637009920, while the sum is 74.

The spelling of 509868288668 in words is "five hundred nine billion, eight hundred sixty-eight million, two hundred eighty-eight thousand, six hundred sixty-eight".