550550403505 has 8 divisors (see below), whose sum is σ = 663011590824. Its totient is φ = 438872918400.

The previous prime is 550550403493. The next prime is 550550403527. The reversal of 550550403505 is 505304055055.

It can be written as a sum of positive squares in 4 ways, for example, as 1979093169 + 548571310336 = 44487^2 + 740656^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-550550403505 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195924006 + ... + 195926815.

It is an arithmetic number, because the mean of its divisors is an integer number (82876448853).

Almost surely, 2^550550403505 is an apocalyptic number.

It is an amenable number.

550550403505 is a deficient number, since it is larger than the sum of its proper divisors (112461187319).

550550403505 is a wasteful number, since it uses less digits than its factorization.

550550403505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391851107.

The product of its (nonzero) digits is 187500, while the sum is 37.

It can be divided in two parts, 550 and 550403505, that added together give a palindrome (550404055).

The spelling of 550550403505 in words is "five hundred fifty billion, five hundred fifty million, four hundred three thousand, five hundred five".