68456194156787 has 2 divisors, whose sum is σ = 68456194156788. Its totient is φ = 68456194156786.

The previous prime is 68456194156759. The next prime is 68456194156837. The reversal of 68456194156787 is 78765149165486.

68456194156787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68456194156787 - 2⁸ = 68456194156531 is a prime.

It is not a weakly prime, because it can be changed into another prime (68456194150787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34228097078393 + 34228097078394.

It is an arithmetic number, because the mean of its divisors is an integer number (34228097078394).

Almost surely, 2^{68456194156787} is an apocalyptic number.

68456194156787 is a deficient number, since it is larger than the sum of its proper divisors (1).

68456194156787 is an equidigital number, since it uses as much as digits as its factorization.

68456194156787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2438553600, while the sum is 77.

The spelling of 68456194156787 in words is "sixty-eight trillion, four hundred fifty-six billion, one hundred ninety-four million, one hundred fifty-six thousand, seven hundred eighty-seven".