842556279459 has 32 divisors (see below), whose sum is σ = 1143787806720. Its totient is φ = 551622709152.

The previous prime is 842556279373. The next prime is 842556279511. The reversal of 842556279459 is 954972655248.

It is not a de Polignac number, because 842556279459 - 2¹¹ = 842556277411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 842556279459.

It is not an unprimeable number, because it can be changed into a prime (842556279559) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20278384 + ... + 20319890.

It is an arithmetic number, because the mean of its divisors is an integer number (35743368960).

Almost surely, 2^842556279459 is an apocalyptic number.

842556279459 is a deficient number, since it is larger than the sum of its proper divisors (301231527261).

842556279459 is a wasteful number, since it uses less digits than its factorization.

842556279459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42159.

The product of its digits is 217728000, while the sum is 66.

The spelling of 842556279459 in words is "eight hundred forty-two billion, five hundred fifty-six million, two hundred seventy-nine thousand, four hundred fifty-nine".