68445376634851 has 2 divisors, whose sum is σ = 68445376634852. Its totient is φ = 68445376634850.

The previous prime is 68445376634839. The next prime is 68445376634903. The reversal of 68445376634851 is 15843667354486.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68445376634851 - 2⁵ = 68445376634819 is a prime.

It is not a weakly prime, because it can be changed into another prime (68445376634351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34222688317425 + 34222688317426.

It is an arithmetic number, because the mean of its divisors is an integer number (34222688317426).

Almost surely, 2^{68445376634851} is an apocalyptic number.

68445376634851 is a deficient number, since it is larger than the sum of its proper divisors (1).

68445376634851 is an equidigital number, since it uses as much as digits as its factorization.

68445376634851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1393459200, while the sum is 70.

The spelling of 68445376634851 in words is "sixty-eight trillion, four hundred forty-five billion, three hundred seventy-six million, six hundred thirty-four thousand, eight hundred fifty-one".