5511000561111 has 16 divisors (see below), whose sum is σ = 8164553241600. Its totient is φ = 3673951789464.

The previous prime is 5511000561061. The next prime is 5511000561133. The reversal of 5511000561111 is 1111650001155.

5511000561111 is a `hidden beast` number, since 551 + 100 + 0 + 5 + 6 + 1 + 1 + 1 + 1 = 666.

It is not a de Polignac number, because 5511000561111 - 2¹¹ = 5511000559063 is a prime.

It is a super-2 number, since 2×5511000561111² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5511000761111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 791770 + ... + 3413048.

It is an arithmetic number, because the mean of its divisors is an integer number (510284577600).

Almost surely, 2^{5511000561111} is an apocalyptic number.

5511000561111 is a deficient number, since it is larger than the sum of its proper divisors (2653552680489).

5511000561111 is a wasteful number, since it uses less digits than its factorization.

5511000561111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2699155 (or 2699149 counting only the distinct ones).

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

Adding to 5511000561111 its reverse (1111650001155), we get a palindrome (6622650562266).

The spelling of 5511000561111 in words is "five trillion, five hundred eleven billion, five hundred sixty-one thousand, one hundred eleven".