68705586449 has 2 divisors, whose sum is σ = 68705586450. Its totient is φ = 68705586448.

The previous prime is 68705586413. The next prime is 68705586457. The reversal of 68705586449 is 94468550786.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67213155025 + 1492431424 = 259255^2 + 38632^2 .

It is a cyclic number.

It is not a de Polignac number, because 68705586449 - 2⁸ = 68705586193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68705586391 and 68705586400.

It is not a weakly prime, because it can be changed into another prime (68705586349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34352793224 + 34352793225.

It is an arithmetic number, because the mean of its divisors is an integer number (34352793225).

Almost surely, 2^68705586449 is an apocalyptic number.

It is an amenable number.

68705586449 is a deficient number, since it is larger than the sum of its proper divisors (1).

68705586449 is an equidigital number, since it uses as much as digits as its factorization.

68705586449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58060800, while the sum is 62.

The spelling of 68705586449 in words is "sixty-eight billion, seven hundred five million, five hundred eighty-six thousand, four hundred forty-nine".