550505500509 has 16 divisors (see below), whose sum is σ = 779476824000. Its totient is φ = 344610798336.

The previous prime is 550505500499. The next prime is 550505500627. The reversal of 550505500509 is 905005505055.

550505500509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 550505500509 - 2²⁵ = 550471946077 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550505504509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42728034 + ... + 42740915.

It is an arithmetic number, because the mean of its divisors is an integer number (48717301500).

Almost surely, 2^550505500509 is an apocalyptic number.

It is an amenable number.

550505500509 is a deficient number, since it is larger than the sum of its proper divisors (228971323491).

550505500509 is a wasteful number, since it uses less digits than its factorization.

550505500509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85469084.

The product of its (nonzero) digits is 140625, while the sum is 39.

The spelling of 550505500509 in words is "five hundred fifty billion, five hundred five million, five hundred thousand, five hundred nine".