68609775842579 has 2 divisors, whose sum is σ = 68609775842580. Its totient is φ = 68609775842578.

The previous prime is 68609775842567. The next prime is 68609775842611. The reversal of 68609775842579 is 97524857790686.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68609775842579 - 2⁴ = 68609775842563 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68609775842497 and 68609775842506.

It is not a weakly prime, because it can be changed into another prime (68609775842539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34304887921289 + 34304887921290.

It is an arithmetic number, because the mean of its divisors is an integer number (34304887921290).

Almost surely, 2^{68609775842579} is an apocalyptic number.

68609775842579 is a deficient number, since it is larger than the sum of its proper divisors (1).

68609775842579 is an equidigital number, since it uses as much as digits as its factorization.

68609775842579 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12802406400, while the sum is 83.

The spelling of 68609775842579 in words is "sixty-eight trillion, six hundred nine billion, seven hundred seventy-five million, eight hundred forty-two thousand, five hundred seventy-nine".