55204220165543 has 2 divisors, whose sum is σ = 55204220165544. Its totient is φ = 55204220165542.

The previous prime is 55204220165513. The next prime is 55204220165551. The reversal of 55204220165543 is 34556102240255.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55204220165543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55204220165494 and 55204220165503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55204220165513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27602110082771 + 27602110082772.

It is an arithmetic number, because the mean of its divisors is an integer number (27602110082772).

Almost surely, 2^{55204220165543} is an apocalyptic number.

55204220165543 is a deficient number, since it is larger than the sum of its proper divisors (1).

55204220165543 is an equidigital number, since it uses as much as digits as its factorization.

55204220165543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440000, while the sum is 44.

The spelling of 55204220165543 in words is "fifty-five trillion, two hundred four billion, two hundred twenty million, one hundred sixty-five thousand, five hundred forty-three".