1056661068841 has 6 divisors (see below), whose sum is σ = 1229177161770. Its totient is φ = 905709487536.

The previous prime is 1056661068811. The next prime is 1056661068893. The reversal of 1056661068841 is 1488601666501.

It can be written as a sum of positive squares in only one way, i.e., 975205625625 + 81455443216 = 987525^2 + 285404^2 .

It is not a de Polignac number, because 1056661068841 - 2⁹ = 1056661068329 is a prime.

It is a super-2 number, since 2×1056661068841² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1056661068811) 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 in 5 ways as a sum of consecutive naturals, for example, 10782255756 + ... + 10782255853.

It is an arithmetic number, because the mean of its divisors is an integer number (204862860295).

Almost surely, 2^{1056661068841} is an apocalyptic number.

It is an amenable number.

1056661068841 is a deficient number, since it is larger than the sum of its proper divisors (172516092929).

1056661068841 is an equidigital number, since it uses as much as digits as its factorization.

1056661068841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21564511623 (or 21564511616 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 52.

The spelling of 1056661068841 in words is "one trillion, fifty-six billion, six hundred sixty-one million, sixty-eight thousand, eight hundred forty-one".