55512355511111 has 2 divisors, whose sum is σ = 55512355511112. Its totient is φ = 55512355511110.

The previous prime is 55512355511071. The next prime is 55512355511167. The reversal of 55512355511111 is 11111555321555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55512355511111 - 2²⁶ = 55512288402247 is a prime.

It is a super-2 number, since 2×55512355511111² (a number of 28 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55512355511191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27756177755555 + 27756177755556.

It is an arithmetic number, because the mean of its divisors is an integer number (27756177755556).

Almost surely, 2^{55512355511111} is an apocalyptic number.

55512355511111 is a deficient number, since it is larger than the sum of its proper divisors (1).

55512355511111 is an equidigital number, since it uses as much as digits as its factorization.

55512355511111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93750, while the sum is 41.

The spelling of 55512355511111 in words is "fifty-five trillion, five hundred twelve billion, three hundred fifty-five million, five hundred eleven thousand, one hundred eleven".