855120724322 has 6 divisors (see below), whose sum is σ = 1282683048129. Its totient is φ = 427559708280.

The previous prime is 855120724313. The next prime is 855120724351. The reversal of 855120724322 is 223427021558.

It can be written as a sum of positive squares in 2 ways, for example, as 777079273441 + 78041450881 = 881521^2 + 279359^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=653881.

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 855120724322.

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 2 ways as a sum of consecutive naturals, for example, 980822 + ... + 1634702.

Almost surely, 2^855120724322 is an apocalyptic number.

855120724322 is a deficient number, since it is larger than the sum of its proper divisors (427562323807).

855120724322 is an frugal number, since it uses more digits than its factorization.

855120724322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307764 (or 653883 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 41.

The spelling of 855120724322 in words is "eight hundred fifty-five billion, one hundred twenty million, seven hundred twenty-four thousand, three hundred twenty-two".