1689652813728 has 384 divisors, whose sum is σ = 5226308075520. Its totient is φ = 472289771520.

The previous prime is 1689652813649. The next prime is 1689652813763. The reversal of 1689652813728 is 8273182569861.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 189227568 + ... + 189236496.

It is an arithmetic number, because the mean of its divisors is an integer number (13610177280).

Almost surely, 2^{1689652813728} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1689652813728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2613154037760).

1689652813728 is an abundant number, since it is smaller than the sum of its proper divisors (3536655261792).

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

1689652813728 is a wasteful number, since it uses less digits than its factorization.

1689652813728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9180 (or 9172 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 66.

The spelling of 1689652813728 in words is "one trillion, six hundred eighty-nine billion, six hundred fifty-two million, eight hundred thirteen thousand, seven hundred twenty-eight".