8639373426789 has 16 divisors (see below), whose sum is σ = 13287794646528. Its totient is φ = 4890646638192.

The previous prime is 8639373426787. The next prime is 8639373426809. The reversal of 8639373426789 is 9876243739368.

It is not a de Polignac number, because 8639373426789 - 2¹ = 8639373426787 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8639373426789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8639373426787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1922421747 + ... + 1922426240.

It is an arithmetic number, because the mean of its divisors is an integer number (830487165408).

Almost surely, 2^{8639373426789} is an apocalyptic number.

It is an amenable number.

8639373426789 is a deficient number, since it is larger than the sum of its proper divisors (4648421219739).

8639373426789 is a wasteful number, since it uses less digits than its factorization.

8639373426789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3844848104.

The product of its digits is 1975228416, while the sum is 75.

The spelling of 8639373426789 in words is "eight trillion, six hundred thirty-nine billion, three hundred seventy-three million, four hundred twenty-six thousand, seven hundred eighty-nine".