5511111011011 has 2 divisors, whose sum is σ = 5511111011012. Its totient is φ = 5511111011010.

The previous prime is 5511111010973. The next prime is 5511111011051. The reversal of 5511111011011 is 1101101111155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5511111011011 - 2¹³ = 5511111002819 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5511111011011.

It is not a weakly prime, because it can be changed into another prime (5511111011051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2755555505505 + 2755555505506.

It is an arithmetic number, because the mean of its divisors is an integer number (2755555505506).

Almost surely, 2^{5511111011011} is an apocalyptic number.

5511111011011 is a deficient number, since it is larger than the sum of its proper divisors (1).

5511111011011 is an equidigital number, since it uses as much as digits as its factorization.

5511111011011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25, while the sum is 19.

Adding to 5511111011011 its reverse (1101101111155), we get a palindrome (6612212122166).

The spelling of 5511111011011 in words is "five trillion, five hundred eleven billion, one hundred eleven million, eleven thousand, eleven".