509868286618 has 16 divisors (see below), whose sum is σ = 817358952384. Its totient is φ = 237695604160.

The previous prime is 509868286607. The next prime is 509868286619. The reversal of 509868286618 is 816682868905.

It is not an unprimeable number, because it can be changed into a prime (509868286619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70071718 + ... + 70078993.

It is an arithmetic number, because the mean of its divisors is an integer number (51084934524).

Almost surely, 2^509868286618 is an apocalyptic number.

509868286618 is a deficient number, since it is larger than the sum of its proper divisors (307490665766).

509868286618 is a wasteful number, since it uses less digits than its factorization.

509868286618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140150837.

The product of its (nonzero) digits is 79626240, while the sum is 67.

The spelling of 509868286618 in words is "five hundred nine billion, eight hundred sixty-eight million, two hundred eighty-six thousand, six hundred eighteen".