12345667789 has 32 divisors (see below), whose sum is σ = 15627691520. Its totient is φ = 9490390272.

The previous prime is 12345667787. The next prime is 12345667799. The reversal of 12345667789 is 98776654321.

It is a cyclic number.

It is not a de Polignac number, because 12345667789 - 2¹ = 12345667787 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12345667783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2789032 + ... + 2793454.

It is an arithmetic number, because the mean of its divisors is an integer number (488365360).

Almost surely, 2^12345667789 is an apocalyptic number.

It is an amenable number.

12345667789 is a deficient number, since it is larger than the sum of its proper divisors (3282023731).

12345667789 is a wasteful number, since it uses less digits than its factorization.

12345667789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5309.

The product of its digits is 15240960, while the sum is 58.

The spelling of 12345667789 in words is "twelve billion, three hundred forty-five million, six hundred sixty-seven thousand, seven hundred eighty-nine".