281556080052 has 72 divisors (see below), whose sum is σ = 753233656896. Its totient is φ = 81536592384.

The previous prime is 281556080033. The next prime is 281556080081. The reversal of 281556080052 is 250080655182.

It is a junction number, because it is equal to n+sod(n) for n = 281556079986 and 281556080013.

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 23 ways as a sum of consecutive naturals, for example, 4048888 + ... + 4117839.

It is an arithmetic number, because the mean of its divisors is an integer number (10461578568).

Almost surely, 2^281556080052 is an apocalyptic number.

It is an amenable number.

281556080052 is an abundant number, since it is smaller than the sum of its proper divisors (471677576844).

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

281556080052 is a wasteful number, since it uses less digits than its factorization.

281556080052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8166777 (or 8166762 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 42.

The spelling of 281556080052 in words is "two hundred eighty-one billion, five hundred fifty-six million, eighty thousand, fifty-two".