842809950556 has 12 divisors (see below), whose sum is σ = 1685619901168. Its totient is φ = 361204264512.

The previous prime is 842809950509. The next prime is 842809950571. The reversal of 842809950556 is 655059908248.

842809950556 is an admirable number.

It is a super-2 number, since 2×842809950556² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 842809950494 and 842809950503.

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, 15050177661 + ... + 15050177716.

Almost surely, 2^842809950556 is an apocalyptic number.

It is an amenable number.

842809950556 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

842809950556 is a wasteful number, since it uses less digits than its factorization.

842809950556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30100355388 (or 30100355386 counting only the distinct ones).

The product of its (nonzero) digits is 31104000, while the sum is 61.

The spelling of 842809950556 in words is "eight hundred forty-two billion, eight hundred nine million, nine hundred fifty thousand, five hundred fifty-six".