67642246753 has 2 divisors, whose sum is σ = 67642246754. Its totient is φ = 67642246752.

The previous prime is 67642246697. The next prime is 67642246757. The reversal of 67642246753 is 35764224676.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60721337889 + 6920908864 = 246417^2 + 83192^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67642246753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67642246753.

It is not a weakly prime, because it can be changed into another prime (67642246757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33821123376 + 33821123377.

It is an arithmetic number, because the mean of its divisors is an integer number (33821123377).

Almost surely, 2^67642246753 is an apocalyptic number.

It is an amenable number.

67642246753 is a deficient number, since it is larger than the sum of its proper divisors (1).

67642246753 is an equidigital number, since it uses as much as digits as its factorization.

67642246753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10160640, while the sum is 52.

The spelling of 67642246753 in words is "sixty-seven billion, six hundred forty-two million, two hundred forty-six thousand, seven hundred fifty-three".