68197316879 has 2 divisors, whose sum is σ = 68197316880. Its totient is φ = 68197316878.

The previous prime is 68197316839. The next prime is 68197316959. The reversal of 68197316879 is 97861379186.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68197316879 - 2²⁴ = 68180539663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68197316809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34098658439 + 34098658440.

It is an arithmetic number, because the mean of its divisors is an integer number (34098658440).

Almost surely, 2^68197316879 is an apocalyptic number.

68197316879 is a deficient number, since it is larger than the sum of its proper divisors (1).

68197316879 is an equidigital number, since it uses as much as digits as its factorization.

68197316879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27433728, while the sum is 65.

The spelling of 68197316879 in words is "sixty-eight billion, one hundred ninety-seven million, three hundred sixteen thousand, eight hundred seventy-nine".