550561066100 has 18 divisors (see below), whose sum is σ = 1194717513654. Its totient is φ = 220224426400.

The previous prime is 550561066091. The next prime is 550561066141. The reversal of 550561066100 is 1660165055.

It can be written as a sum of positive squares in 3 ways, for example, as 5663164516 + 544897901584 = 75254^2 + 738172^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2752805231 + ... + 2752805430.

It is an arithmetic number, because the mean of its divisors is an integer number (66373195203).

Almost surely, 2^550561066100 is an apocalyptic number.

550561066100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

550561066100 is an abundant number, since it is smaller than the sum of its proper divisors (644156447554).

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

550561066100 is a wasteful number, since it uses less digits than its factorization.

550561066100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5505610675 (or 5505610668 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 550561066100 in words is "five hundred fifty billion, five hundred sixty-one million, sixty-six thousand, one hundred".