1289639085752 has 16 divisors (see below), whose sum is σ = 2440672103160. Its totient is φ = 638793191584.

The previous prime is 1289639085739. The next prime is 1289639085797. The reversal of 1289639085752 is 2575809369821.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 753293003 + ... + 753294714.

Almost surely, 2^{1289639085752} is an apocalyptic number.

It is an amenable number.

1289639085752 is a deficient number, since it is larger than the sum of its proper divisors (1151033017408).

1289639085752 is a wasteful number, since it uses less digits than its factorization.

1289639085752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506587830 (or 1506587826 counting only the distinct ones).

The product of its (nonzero) digits is 65318400, while the sum is 65.

The spelling of 1289639085752 in words is "one trillion, two hundred eighty-nine billion, six hundred thirty-nine million, eighty-five thousand, seven hundred fifty-two".