67867075668789 has 6 divisors (see below), whose sum is σ = 98030220410486. Its totient is φ = 45244717112520.

The previous prime is 67867075668779. The next prime is 67867075668859. The reversal of 67867075668789 is 98786657076876.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 66466680344100 + 1400395324689 = 8152710^2 + 1183383^2 .

It is not a de Polignac number, because 67867075668789 - 2⁷ = 67867075668661 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67867075668699 and 67867075668708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67867075668779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3770393092702 + ... + 3770393092719.

Almost surely, 2^{67867075668789} is an apocalyptic number.

It is an amenable number.

67867075668789 is a deficient number, since it is larger than the sum of its proper divisors (30163144741697).

67867075668789 is a wasteful number, since it uses less digits than its factorization.

67867075668789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7540786185427 (or 7540786185424 counting only the distinct ones).

The product of its (nonzero) digits is 71693475840, while the sum is 90.

The spelling of 67867075668789 in words is "sixty-seven trillion, eight hundred sixty-seven billion, seventy-five million, six hundred sixty-eight thousand, seven hundred eighty-nine".