550505551616 has 144 divisors (see below), whose sum is σ = 1130755516800. Its totient is φ = 267411456000.

The previous prime is 550505551613. The next prime is 550505551637. The reversal of 550505551616 is 616155505055.

It is a super-2 number, since 2×550505551616² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550505551613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 369714200 + ... + 369715688.

Almost surely, 2^550505551616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550505551616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (565377758400).

550505551616 is an abundant number, since it is smaller than the sum of its proper divisors (580249965184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

550505551616 is a wasteful number, since it uses less digits than its factorization.

550505551616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1866 (or 1852 counting only the distinct ones).

The product of its (nonzero) digits is 562500, while the sum is 44.

The spelling of 550505551616 in words is "five hundred fifty billion, five hundred five million, five hundred fifty-one thousand, six hundred sixteen".