5561001006111 has 6 divisors (see below), whose sum is σ = 8032557008840. Its totient is φ = 3707334004068.

The previous prime is 5561001006089. The next prime is 5561001006151. The reversal of 5561001006111 is 1116001001655.

5561001006111 is a `hidden beast` number, since 556 + 1 + 0 + 0 + 100 + 6 + 1 + 1 + 1 = 666.

It is not a de Polignac number, because 5561001006111 - 2¹³ = 5561000997919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5561001006151) 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 5 ways as a sum of consecutive naturals, for example, 308944500331 + ... + 308944500348.

Almost surely, 2^{5561001006111} is an apocalyptic number.

5561001006111 is a deficient number, since it is larger than the sum of its proper divisors (2471556002729).

5561001006111 is a wasteful number, since it uses less digits than its factorization.

5561001006111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617889000685 (or 617889000682 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

Adding to 5561001006111 its reverse (1116001001655), we get a palindrome (6677002007766).

The spelling of 5561001006111 in words is "five trillion, five hundred sixty-one billion, one million, six thousand, one hundred eleven".