1289605960806 has 32 divisors (see below), whose sum is σ = 2634168273408. Its totient is φ = 420709813920.

The previous prime is 1289605960789. The next prime is 1289605960847. The reversal of 1289605960806 is 6080695069821.

It is a self number, because there is not a number n which added to its sum of digits gives 1289605960806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15537136 + ... + 15619916.

It is an arithmetic number, because the mean of its divisors is an integer number (82317758544).

Almost surely, 2^{1289605960806} is an apocalyptic number.

1289605960806 is an abundant number, since it is smaller than the sum of its proper divisors (1344562312602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1289605960806 is a wasteful number, since it uses less digits than its factorization.

1289605960806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138076.

The product of its (nonzero) digits is 11197440, while the sum is 60.

The spelling of 1289605960806 in words is "one trillion, two hundred eighty-nine billion, six hundred five million, nine hundred sixty thousand, eight hundred six".