1066056220543 has 2 divisors, whose sum is σ = 1066056220544. Its totient is φ = 1066056220542.

The previous prime is 1066056220529. The next prime is 1066056220577. The reversal of 1066056220543 is 3450226506601.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1066056220543 is a prime.

It is a super-2 number, since 2×1066056220543² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1066056220496 and 1066056220505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1066056200543) 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, 533028110271 + 533028110272.

It is an arithmetic number, because the mean of its divisors is an integer number (533028110272).

Almost surely, 2^{1066056220543} is an apocalyptic number.

1066056220543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066056220543 is an equidigital number, since it uses as much as digits as its factorization.

1066056220543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 1066056220543 in words is "one trillion, sixty-six billion, fifty-six million, two hundred twenty thousand, five hundred forty-three".