550561110111 has 24 divisors (see below), whose sum is σ = 817385540400. Its totient is φ = 356842094976.

The previous prime is 550561110097. The next prime is 550561110137. The reversal of 550561110111 is 111011165055.

550561110111 is a `hidden beast` number, since 550 + 5 + 6 + 1 + 1 + 101 + 1 + 1 = 666.

It is not a de Polignac number, because 550561110111 - 2¹⁴ = 550561093727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550561110161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 217086 + ... + 1071563.

It is an arithmetic number, because the mean of its divisors is an integer number (34057730850).

Almost surely, 2^550561110111 is an apocalyptic number.

550561110111 is a deficient number, since it is larger than the sum of its proper divisors (266824430289).

550561110111 is a wasteful number, since it uses less digits than its factorization.

550561110111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289975 (or 1289972 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 27.

Adding to 550561110111 its reverse (111011165055), we get a palindrome (661572275166).

The spelling of 550561110111 in words is "five hundred fifty billion, five hundred sixty-one million, one hundred ten thousand, one hundred eleven".