68382423475481 has 2 divisors, whose sum is σ = 68382423475482. Its totient is φ = 68382423475480.

The previous prime is 68382423475343. The next prime is 68382423475501. The reversal of 68382423475481 is 18457432428386.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38463055055881 + 29919368419600 = 6201859^2 + 5469860^2 .

It is a cyclic number.

It is not a de Polignac number, because 68382423475481 - 2¹⁸ = 68382423213337 is a prime.

It is a super-2 number, since 2×68382423475481² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68382423474481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34191211737740 + 34191211737741.

It is an arithmetic number, because the mean of its divisors is an integer number (34191211737741).

Almost surely, 2^{68382423475481} is an apocalyptic number.

It is an amenable number.

68382423475481 is a deficient number, since it is larger than the sum of its proper divisors (1).

68382423475481 is an equidigital number, since it uses as much as digits as its factorization.

68382423475481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 247726080, while the sum is 65.

The spelling of 68382423475481 in words is "sixty-eight trillion, three hundred eighty-two billion, four hundred twenty-three million, four hundred seventy-five thousand, four hundred eighty-one".