55055555005543 has 2 divisors, whose sum is σ = 55055555005544. Its totient is φ = 55055555005542.

The previous prime is 55055555005489. The next prime is 55055555005579. The reversal of 55055555005543 is 34550055555055.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55055555005543 is a prime.

It is a super-2 number, since 2×55055555005543² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55055555035543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27527777502771 + 27527777502772.

It is an arithmetic number, because the mean of its divisors is an integer number (27527777502772).

Almost surely, 2^{55055555005543} is an apocalyptic number.

55055555005543 is a deficient number, since it is larger than the sum of its proper divisors (1).

55055555005543 is an equidigital number, since it uses as much as digits as its factorization.

55055555005543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23437500, while the sum is 52.

The spelling of 55055555005543 in words is "fifty-five trillion, fifty-five billion, five hundred fifty-five million, five thousand, five hundred forty-three".