1068843278257 has 2 divisors, whose sum is σ = 1068843278258. Its totient is φ = 1068843278256.

The previous prime is 1068843278227. The next prime is 1068843278281. The reversal of 1068843278257 is 7528723488601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 647838253456 + 421005024801 = 804884^2 + 648849^2 .

It is a cyclic number.

It is not a de Polignac number, because 1068843278257 - 2¹¹ = 1068843276209 is a prime.

It is a super-2 number, since 2×1068843278257² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1068843278195 and 1068843278204.

It is not a weakly prime, because it can be changed into another prime (1068843278227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 534421639128 + 534421639129.

It is an arithmetic number, because the mean of its divisors is an integer number (534421639129).

Almost surely, 2^{1068843278257} is an apocalyptic number.

It is an amenable number.

1068843278257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1068843278257 is an equidigital number, since it uses as much as digits as its factorization.

1068843278257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36126720, while the sum is 61.

The spelling of 1068843278257 in words is "one trillion, sixty-eight billion, eight hundred forty-three million, two hundred seventy-eight thousand, two hundred fifty-seven".