68195635243 has 2 divisors, whose sum is σ = 68195635244. Its totient is φ = 68195635242.

The previous prime is 68195635217. The next prime is 68195635253. The reversal of 68195635243 is 34253659186.

68195635243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68195635243 is a prime.

It is not a weakly prime, because it can be changed into another prime (68195635253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34097817621 + 34097817622.

It is an arithmetic number, because the mean of its divisors is an integer number (34097817622).

Almost surely, 2^68195635243 is an apocalyptic number.

68195635243 is a deficient number, since it is larger than the sum of its proper divisors (1).

68195635243 is an equidigital number, since it uses as much as digits as its factorization.

68195635243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4665600, while the sum is 52.

The spelling of 68195635243 in words is "sixty-eight billion, one hundred ninety-five million, six hundred thirty-five thousand, two hundred forty-three".