5555005555550 has 48 divisors (see below), whose sum is σ = 11864853993600. Its totient is φ = 1913686120800.

The previous prime is 5555005555549. The next prime is 5555005555591. The reversal of 5555005555550 is 555555005555.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 265779290 + ... + 265800189.

It is an arithmetic number, because the mean of its divisors is an integer number (247184458200).

Almost surely, 2^{5555005555550} is an apocalyptic number.

5555005555550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5555005555550 is an abundant number, since it is smaller than the sum of its proper divisors (6309848438050).

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

5555005555550 is a wasteful number, since it uses less digits than its factorization.

5555005555550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531579521 (or 531579516 counting only the distinct ones).

The product of its (nonzero) digits is 9765625, while the sum is 50.

The spelling of 5555005555550 in words is "five trillion, five hundred fifty-five billion, five million, five hundred fifty-five thousand, five hundred fifty".