68407538683243 has 2 divisors, whose sum is σ = 68407538683244. Its totient is φ = 68407538683242.

The previous prime is 68407538683171. The next prime is 68407538683259. The reversal of 68407538683243 is 34238683570486.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68407538683243 - 2²⁵ = 68407505128811 is a prime.

It is not a weakly prime, because it can be changed into another prime (68407538683343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34203769341621 + 34203769341622.

It is an arithmetic number, because the mean of its divisors is an integer number (34203769341622).

Almost surely, 2^{68407538683243} is an apocalyptic number.

68407538683243 is a deficient number, since it is larger than the sum of its proper divisors (1).

68407538683243 is an equidigital number, since it uses as much as digits as its factorization.

68407538683243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 557383680, while the sum is 67.

The spelling of 68407538683243 in words is "sixty-eight trillion, four hundred seven billion, five hundred thirty-eight million, six hundred eighty-three thousand, two hundred forty-three".