555111061111 has 2 divisors, whose sum is σ = 555111061112. Its totient is φ = 555111061110.

The previous prime is 555111061049. The next prime is 555111061187. The reversal of 555111061111 is 111160111555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 555111061111 - 2¹³ = 555111052919 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 555111061111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (555111071111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277555530555 + 277555530556.

It is an arithmetic number, because the mean of its divisors is an integer number (277555530556).

Almost surely, 2^555111061111 is an apocalyptic number.

555111061111 is a deficient number, since it is larger than the sum of its proper divisors (1).

555111061111 is an equidigital number, since it uses as much as digits as its factorization.

555111061111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 750, while the sum is 28.

Adding to 555111061111 its reverse (111160111555), we get a palindrome (666271172666).

The spelling of 555111061111 in words is "five hundred fifty-five billion, one hundred eleven million, sixty-one thousand, one hundred eleven".