68747480281 has 2 divisors, whose sum is σ = 68747480282. Its totient is φ = 68747480280.

The previous prime is 68747480261. The next prime is 68747480317. The reversal of 68747480281 is 18208474786.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35124757056 + 33622723225 = 187416^2 + 183365^2 .

It is a cyclic number.

It is not a de Polignac number, because 68747480281 - 2²¹ = 68745383129 is a prime.

It is a super-3 number, since 3×68747480281³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (68747480231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34373740140 + 34373740141.

It is an arithmetic number, because the mean of its divisors is an integer number (34373740141).

Almost surely, 2^68747480281 is an apocalyptic number.

It is an amenable number.

68747480281 is a deficient number, since it is larger than the sum of its proper divisors (1).

68747480281 is an equidigital number, since it uses as much as digits as its factorization.

68747480281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4816896, while the sum is 55.

The spelling of 68747480281 in words is "sixty-eight billion, seven hundred forty-seven million, four hundred eighty thousand, two hundred eighty-one".