5555555055550 has 24 divisors (see below), whose sum is σ = 10396727095896. Its totient is φ = 2208588755040.

The previous prime is 5555555055541. The next prime is 5555555055551. The reversal of 5555555055550 is 555505555555.

It is a junction number, because it is equal to n+sod(n) for n = 5555555055491 and 5555555055500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5555555055551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 340823449 + ... + 340839748.

It is an arithmetic number, because the mean of its divisors is an integer number (433196962329).

Almost surely, 2^{5555555055550} is an apocalyptic number.

5555555055550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5555555055550 is a deficient number, since it is larger than the sum of its proper divisors (4841172040346).

5555555055550 is a wasteful number, since it uses less digits than its factorization.

5555555055550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681663372 (or 681663367 counting only the distinct ones).

The product of its (nonzero) digits is 48828125, while the sum is 55.

The spelling of 5555555055550 in words is "five trillion, five hundred fifty-five billion, five hundred fifty-five million, fifty-five thousand, five hundred fifty".