67101347681 has 2 divisors, whose sum is σ = 67101347682. Its totient is φ = 67101347680.

The previous prime is 67101347671. The next prime is 67101347707. The reversal of 67101347681 is 18674310176.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60248157025 + 6853190656 = 245455^2 + 82784^2 .

It is a cyclic number.

It is not a de Polignac number, because 67101347681 - 2³⁰ = 66027605857 is a prime.

It is a super-2 number, since 2×67101347681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67101347671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33550673840 + 33550673841.

It is an arithmetic number, because the mean of its divisors is an integer number (33550673841).

Almost surely, 2^67101347681 is an apocalyptic number.

It is an amenable number.

67101347681 is a deficient number, since it is larger than the sum of its proper divisors (1).

67101347681 is an equidigital number, since it uses as much as digits as its factorization.

67101347681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 44.

The spelling of 67101347681 in words is "sixty-seven billion, one hundred one million, three hundred forty-seven thousand, six hundred eighty-one".