550535561100 has 216 divisors, whose sum is σ = 1973425359360. Its totient is φ = 125754733440.

The previous prime is 550535561047. The next prime is 550535561123. The reversal of 550535561100 is 1165535055.

550535561100 is a `hidden beast` number, since 5 + 5 + 0 + 5 + 35 + 5 + 611 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9920029 + ... + 9975371.

Almost surely, 2^550535561100 is an apocalyptic number.

550535561100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550535561100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (986712679680).

550535561100 is an abundant number, since it is smaller than the sum of its proper divisors (1422889798260).

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

550535561100 is a wasteful number, since it uses less digits than its factorization.

550535561100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56949 (or 56939 counting only the distinct ones).

The product of its (nonzero) digits is 56250, while the sum is 36.

The spelling of 550535561100 in words is "five hundred fifty billion, five hundred thirty-five million, five hundred sixty-one thousand, one hundred".