68485612049 has 2 divisors, whose sum is σ = 68485612050. Its totient is φ = 68485612048.

The previous prime is 68485612001. The next prime is 68485612057. The reversal of 68485612049 is 94021658486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44576721424 + 23908890625 = 211132^2 + 154625^2 .

It is a cyclic number.

It is not a de Polignac number, because 68485612049 - 2¹⁶ = 68485546513 is a prime.

It is a super-2 number, since 2×68485612049² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68485612649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34242806024 + 34242806025.

It is an arithmetic number, because the mean of its divisors is an integer number (34242806025).

Almost surely, 2^68485612049 is an apocalyptic number.

It is an amenable number.

68485612049 is a deficient number, since it is larger than the sum of its proper divisors (1).

68485612049 is an equidigital number, since it uses as much as digits as its factorization.

68485612049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3317760, while the sum is 53.

The spelling of 68485612049 in words is "sixty-eight billion, four hundred eighty-five million, six hundred twelve thousand, forty-nine".