67778648143 has 2 divisors, whose sum is σ = 67778648144. Its totient is φ = 67778648142.

The previous prime is 67778648129. The next prime is 67778648167. The reversal of 67778648143 is 34184687776.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67778648143 - 2²⁹ = 67241777231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67778648123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33889324071 + 33889324072.

It is an arithmetic number, because the mean of its divisors is an integer number (33889324072).

Almost surely, 2^67778648143 is an apocalyptic number.

67778648143 is a deficient number, since it is larger than the sum of its proper divisors (1).

67778648143 is an equidigital number, since it uses as much as digits as its factorization.

67778648143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37933056, while the sum is 61.

The spelling of 67778648143 in words is "sixty-seven billion, seven hundred seventy-eight million, six hundred forty-eight thousand, one hundred forty-three".