842264417618 has 18 divisors (see below), whose sum is σ = 1368084108069. Its totient is φ = 388729636152.

The previous prime is 842264417573. The next prime is 842264417639. The reversal of 842264417618 is 816714462248.

It can be written as a sum of positive squares in 2 ways, for example, as 720160996129 + 122103421489 = 848623^2 + 349433^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=648947.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 842264417618.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 16847663 + ... + 16897581.

Almost surely, 2^842264417618 is an apocalyptic number.

842264417618 is a deficient number, since it is larger than the sum of its proper divisors (525819690451).

842264417618 is an frugal number, since it uses more digits than its factorization.

842264417618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99866 (or 49934 counting only the distinct ones).

The product of its digits is 4128768, while the sum is 53.

The spelling of 842264417618 in words is "eight hundred forty-two billion, two hundred sixty-four million, four hundred seventeen thousand, six hundred eighteen".