5555005055556 has 192 divisors, whose sum is σ = 15047989125120. Its totient is φ = 1576259389440.

The previous prime is 5555005055519. The next prime is 5555005055557. The reversal of 5555005055556 is 6555505005555.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 5555005055499 and 5555005055508.

It is not an unprimeable number, because it can be changed into a prime (5555005055557) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1510741990 + ... + 1510745666.

It is an arithmetic number, because the mean of its divisors is an integer number (78374943360).

Almost surely, 2^{5555005055556} 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 5555005055556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7523994562560).

5555005055556 is an abundant number, since it is smaller than the sum of its proper divisors (9492984069564).

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

5555005055556 is a wasteful number, since it uses less digits than its factorization.

5555005055556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6954 (or 6952 counting only the distinct ones).

The product of its (nonzero) digits is 11718750, while the sum is 51.

The spelling of 5555005055556 in words is "five trillion, five hundred fifty-five billion, five million, fifty-five thousand, five hundred fifty-six".