67845666789 has 24 divisors (see below), whose sum is σ = 98339439744. Its totient is φ = 45073680000.

The previous prime is 67845666787. The next prime is 67845666797. The reversal of 67845666789 is 98766654876.

It is not a de Polignac number, because 67845666789 - 2¹ = 67845666787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67845666781) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3928804 + ... + 3946034.

It is an arithmetic number, because the mean of its divisors is an integer number (4097476656).

Almost surely, 2^67845666789 is an apocalyptic number.

It is an amenable number.

67845666789 is a deficient number, since it is larger than the sum of its proper divisors (30493772955).

67845666789 is a wasteful number, since it uses less digits than its factorization.

67845666789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18729 (or 18726 counting only the distinct ones).

The product of its digits is 731566080, while the sum is 72.

The spelling of 67845666789 in words is "sixty-seven billion, eight hundred forty-five million, six hundred sixty-six thousand, seven hundred eighty-nine".