68818750069 has 2 divisors, whose sum is σ = 68818750070. Its totient is φ = 68818750068.

The previous prime is 68818750051. The next prime is 68818750081. The reversal of 68818750069 is 96005781886.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55232050225 + 13586699844 = 235015^2 + 116562^2 .

It is a cyclic number.

It is not a de Polignac number, because 68818750069 - 2⁹ = 68818749557 is a prime.

It is a super-2 number, since 2×68818750069² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68818749995 and 68818750022.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68818750969) 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, 34409375034 + 34409375035.

It is an arithmetic number, because the mean of its divisors is an integer number (34409375035).

Almost surely, 2^68818750069 is an apocalyptic number.

It is an amenable number.

68818750069 is a deficient number, since it is larger than the sum of its proper divisors (1).

68818750069 is an equidigital number, since it uses as much as digits as its factorization.

68818750069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5806080, while the sum is 58.

The spelling of 68818750069 in words is "sixty-eight billion, eight hundred eighteen million, seven hundred fifty thousand, sixty-nine".