1068136654549 has 2 divisors, whose sum is σ = 1068136654550. Its totient is φ = 1068136654548.

The previous prime is 1068136654537. The next prime is 1068136654583. The reversal of 1068136654549 is 9454566318601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 963715256100 + 104421398449 = 981690^2 + 323143^2 .

It is a cyclic number.

It is not a de Polignac number, because 1068136654549 - 2¹¹ = 1068136652501 is a prime.

It is a super-2 number, since 2×1068136654549² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1068136654493 and 1068136654502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1068136654049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 534068327274 + 534068327275.

It is an arithmetic number, because the mean of its divisors is an integer number (534068327275).

Almost surely, 2^{1068136654549} is an apocalyptic number.

It is an amenable number.

1068136654549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1068136654549 is an equidigital number, since it uses as much as digits as its factorization.

1068136654549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18662400, while the sum is 58.

The spelling of 1068136654549 in words is "one trillion, sixty-eight billion, one hundred thirty-six million, six hundred fifty-four thousand, five hundred forty-nine".