555550055550 has 144 divisors (see below), whose sum is σ = 1706435602560. Its totient is φ = 126935795520.

The previous prime is 555550055531. The next prime is 555550055551. The reversal of 555550055550 is 55550055555.

555550055550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 555550055496 and 555550055505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555550055551) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 8848569 + ... + 8911131.

It is an arithmetic number, because the mean of its divisors is an integer number (11850247240).

Almost surely, 2^555550055550 is an apocalyptic number.

555550055550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 555550055550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (853217801280).

555550055550 is an abundant number, since it is smaller than the sum of its proper divisors (1150885547010).

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

555550055550 is a wasteful number, since it uses less digits than its factorization.

555550055550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65407 (or 65399 counting only the distinct ones).

The product of its (nonzero) digits is 1953125, while the sum is 45.

The spelling of 555550055550 in words is "five hundred fifty-five billion, five hundred fifty million, fifty-five thousand, five hundred fifty".