555500005550 has 24 divisors (see below), whose sum is σ = 1180834298256. Its totient is φ = 190457144640.

The previous prime is 555500005523. The next prime is 555500005579. The reversal of 555500005550 is 55500005555.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 555500005550.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 793571087 + ... + 793571786.

It is an arithmetic number, because the mean of its divisors is an integer number (49201429094).

Almost surely, 2^555500005550 is an apocalyptic number.

555500005550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

555500005550 is an abundant number, since it is smaller than the sum of its proper divisors (625334292706).

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

555500005550 is a wasteful number, since it uses less digits than its factorization.

555500005550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587142892 (or 1587142887 counting only the distinct ones).

The product of its (nonzero) digits is 78125, while the sum is 35.

The spelling of 555500005550 in words is "five hundred fifty-five billion, five hundred million, five thousand, five hundred fifty".