67894511789 has 16 divisors (see below), whose sum is σ = 73885862400. Its totient is φ = 62013729600.

The previous prime is 67894511777. The next prime is 67894511803. The reversal of 67894511789 is 98711549876.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67894511789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67894511989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2279012 + ... + 2308610.

It is an arithmetic number, because the mean of its divisors is an integer number (4617866400).

Almost surely, 2^67894511789 is an apocalyptic number.

It is an amenable number.

67894511789 is a deficient number, since it is larger than the sum of its proper divisors (5991350611).

67894511789 is a wasteful number, since it uses less digits than its factorization.

67894511789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31460.

The product of its digits is 30481920, while the sum is 65.

The spelling of 67894511789 in words is "sixty-seven billion, eight hundred ninety-four million, five hundred eleven thousand, seven hundred eighty-nine".