550505550123 has 16 divisors (see below), whose sum is σ = 863538118560. Its totient is φ = 345415246848.

The previous prime is 550505550121. The next prime is 550505550131. The reversal of 550505550123 is 321055505055.

550505550123 is a `hidden beast` number, since 5 + 50 + 50 + 5 + 550 + 1 + 2 + 3 = 666.

It is not a de Polignac number, because 550505550123 - 2¹ = 550505550121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (550505550121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 599678790 + ... + 599679707.

It is an arithmetic number, because the mean of its divisors is an integer number (53971132410).

Almost surely, 2^550505550123 is an apocalyptic number.

550505550123 is a deficient number, since it is larger than the sum of its proper divisors (313032568437).

550505550123 is a wasteful number, since it uses less digits than its factorization.

550505550123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199358523 (or 1199358517 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 36.

The spelling of 550505550123 in words is "five hundred fifty billion, five hundred five million, five hundred fifty thousand, one hundred twenty-three".