281622869556 has 96 divisors (see below), whose sum is σ = 767231324160. Its totient is φ = 78725153664.

The previous prime is 281622869531. The next prime is 281622869569. The reversal of 281622869556 is 655968226182.

It is a super-2 number, since 2×281622869556² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 281622869556.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13685331 + ... + 13705893.

It is an arithmetic number, because the mean of its divisors is an integer number (7991992960).

Almost surely, 2^281622869556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 281622869556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383615662080).

281622869556 is an abundant number, since it is smaller than the sum of its proper divisors (485608454604).

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

281622869556 is a wasteful number, since it uses less digits than its factorization.

281622869556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24093 (or 24091 counting only the distinct ones).

The product of its digits is 24883200, while the sum is 60.

The spelling of 281622869556 in words is "two hundred eighty-one billion, six hundred twenty-two million, eight hundred sixty-nine thousand, five hundred fifty-six".