555550111000 has 64 divisors (see below), whose sum is σ = 1301376847680. Its totient is φ = 221982508800.

The previous prime is 555550110979. The next prime is 555550111001. The reversal of 555550111000 is 111055555.

It is a super-2 number, since 2×555550111000² (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 555550111000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555550111001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 640549 + ... + 1233451.

It is an arithmetic number, because the mean of its divisors is an integer number (20334013245).

Almost surely, 2^555550111000 is an apocalyptic number.

555550111000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 555550111000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (650688423840).

555550111000 is an abundant number, since it is smaller than the sum of its proper divisors (745826736680).

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

555550111000 is a wasteful number, since it uses less digits than its factorization.

555550111000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593861 (or 593847 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 28.

Adding to 555550111000 its reverse (111055555), we get a palindrome (555661166555).

The spelling of 555550111000 in words is "five hundred fifty-five billion, five hundred fifty million, one hundred eleven thousand".