855505055556 has 96 divisors (see below), whose sum is σ = 2313127900160. Its totient is φ = 273124224000.

The previous prime is 855505055551. The next prime is 855505055567. The reversal of 855505055556 is 655550505558.

855505055556 is a `hidden beast` number, since 85 + 5 + 5 + 0 + 5 + 0 + 5 + 5 + 556 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (855505055551) by changing a digit.

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, 992395 + ... + 1641906.

Almost surely, 2^855505055556 is an apocalyptic number.

It is an amenable number.

855505055556 is an abundant number, since it is smaller than the sum of its proper divisors (1457622844604).

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

855505055556 is a wasteful number, since it uses less digits than its factorization.

855505055556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2634442 (or 2634434 counting only the distinct ones).

The product of its (nonzero) digits is 18750000, while the sum is 54.

The spelling of 855505055556 in words is "eight hundred fifty-five billion, five hundred five million, fifty-five thousand, five hundred fifty-six".