550561100011 has 4 divisors (see below), whose sum is σ = 592911953872. Its totient is φ = 508210246152.

The previous prime is 550561099939. The next prime is 550561100029. The reversal of 550561100011 is 110001165055.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 550561100011 - 2⁹ = 550561099499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550561100041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21175426911 + ... + 21175426936.

It is an arithmetic number, because the mean of its divisors is an integer number (148227988468).

Almost surely, 2^550561100011 is an apocalyptic number.

550561100011 is a deficient number, since it is larger than the sum of its proper divisors (42350853861).

550561100011 is a wasteful number, since it uses less digits than its factorization.

550561100011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42350853860.

The product of its (nonzero) digits is 750, while the sum is 25.

Adding to 550561100011 its reverse (110001165055), we get a palindrome (660562265066).

The spelling of 550561100011 in words is "five hundred fifty billion, five hundred sixty-one million, one hundred thousand, eleven".