1061116856641 has 2 divisors, whose sum is σ = 1061116856642. Its totient is φ = 1061116856640.

The previous prime is 1061116856629. The next prime is 1061116856741. The reversal of 1061116856641 is 1466586111601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 680082258241 + 381034598400 = 824671^2 + 617280^2 .

It is a cyclic number.

It is not a de Polignac number, because 1061116856641 - 2¹⁵ = 1061116823873 is a prime.

It is a super-2 number, since 2×1061116856641² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1061116856591 and 1061116856600.

It is not a weakly prime, because it can be changed into another prime (1061116856621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530558428320 + 530558428321.

It is an arithmetic number, because the mean of its divisors is an integer number (530558428321).

Almost surely, 2^{1061116856641} is an apocalyptic number.

It is an amenable number.

1061116856641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061116856641 is an equidigital number, since it uses as much as digits as its factorization.

1061116856641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 46.

The spelling of 1061116856641 in words is "one trillion, sixty-one billion, one hundred sixteen million, eight hundred fifty-six thousand, six hundred forty-one".