67668137039 has 2 divisors, whose sum is σ = 67668137040. Its totient is φ = 67668137038.

The previous prime is 67668137027. The next prime is 67668137077. The reversal of 67668137039 is 93073186676.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67668137039 - 2¹⁶ = 67668071503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67668137239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33834068519 + 33834068520.

It is an arithmetic number, because the mean of its divisors is an integer number (33834068520).

Almost surely, 2^67668137039 is an apocalyptic number.

67668137039 is a deficient number, since it is larger than the sum of its proper divisors (1).

67668137039 is an equidigital number, since it uses as much as digits as its factorization.

67668137039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6858432, while the sum is 56.

The spelling of 67668137039 in words is "sixty-seven billion, six hundred sixty-eight million, one hundred thirty-seven thousand, thirty-nine".