550550505555 has 16 divisors (see below), whose sum is σ = 978756454560. Its totient is φ = 293626936224.

The previous prime is 550550505493. The next prime is 550550505587. The reversal of 550550505555 is 555505055055.

It is not a de Polignac number, because 550550505555 - 2¹⁰ = 550550504531 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 550550505555.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2039075812 + ... + 2039076081.

It is an arithmetic number, because the mean of its divisors is an integer number (61172278410).

Almost surely, 2^550550505555 is an apocalyptic number.

550550505555 is a deficient number, since it is larger than the sum of its proper divisors (428205949005).

550550505555 is a wasteful number, since it uses less digits than its factorization.

550550505555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4078151907 (or 4078151901 counting only the distinct ones).

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

The spelling of 550550505555 in words is "five hundred fifty billion, five hundred fifty million, five hundred five thousand, five hundred fifty-five".