551055611111 has 2 divisors, whose sum is σ = 551055611112. Its totient is φ = 551055611110.

The previous prime is 551055611087. The next prime is 551055611203. The reversal of 551055611111 is 111116550155.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551055611111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551055611011) 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, 275527805555 + 275527805556.

It is an arithmetic number, because the mean of its divisors is an integer number (275527805556).

Almost surely, 2^551055611111 is an apocalyptic number.

551055611111 is a deficient number, since it is larger than the sum of its proper divisors (1).

551055611111 is an equidigital number, since it uses as much as digits as its factorization.

551055611111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3750, while the sum is 32.

The spelling of 551055611111 in words is "five hundred fifty-one billion, fifty-five million, six hundred eleven thousand, one hundred eleven".