555580555550 has 48 divisors (see below), whose sum is σ = 1097731459440. Its totient is φ = 208478338560.

The previous prime is 555580555531. The next prime is 555580555571. The reversal of 555580555550 is 55555085555.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 555580555492 and 555580555501.

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 23 ways as a sum of consecutive naturals, for example, 803585 + ... + 1325484.

It is an arithmetic number, because the mean of its divisors is an integer number (22869405405).

Almost surely, 2^555580555550 is an apocalyptic number.

555580555550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

555580555550 is a deficient number, since it is larger than the sum of its proper divisors (542150903890).

555580555550 is a wasteful number, since it uses less digits than its factorization.

555580555550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2129405 (or 2129400 counting only the distinct ones).

The product of its (nonzero) digits is 15625000, while the sum is 53.

The spelling of 555580555550 in words is "five hundred fifty-five billion, five hundred eighty million, five hundred fifty-five thousand, five hundred fifty".