67911734665679 has 2 divisors, whose sum is σ = 67911734665680. Its totient is φ = 67911734665678.

The previous prime is 67911734665601. The next prime is 67911734665711. The reversal of 67911734665679 is 97656643711976.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67911734665679 - 2²⁰ = 67911733617103 is a prime.

It is a super-2 number, since 2×67911734665679² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67911734664679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33955867332839 + 33955867332840.

It is an arithmetic number, because the mean of its divisors is an integer number (33955867332840).

Almost surely, 2^{67911734665679} is an apocalyptic number.

67911734665679 is a deficient number, since it is larger than the sum of its proper divisors (1).

67911734665679 is an equidigital number, since it uses as much as digits as its factorization.

67911734665679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160406080, while the sum is 77.

The spelling of 67911734665679 in words is "sixty-seven trillion, nine hundred eleven billion, seven hundred thirty-four million, six hundred sixty-five thousand, six hundred seventy-nine".