1689557775328 has 48 divisors (see below), whose sum is σ = 3381925886640. Its totient is φ = 830664806400.

The previous prime is 1689557775271. The next prime is 1689557775329. The reversal of 1689557775328 is 8235777559861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1689557775329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6049323 + ... + 6322453.

It is an arithmetic number, because the mean of its divisors is an integer number (70456789305).

Almost surely, 2^{1689557775328} 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 1689557775328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1690962943320).

1689557775328 is an abundant number, since it is smaller than the sum of its proper divisors (1692368111312).

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

1689557775328 is a wasteful number, since it uses less digits than its factorization.

1689557775328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276371 (or 276363 counting only the distinct ones).

The product of its digits is 889056000, while the sum is 73.

The spelling of 1689557775328 in words is "one trillion, six hundred eighty-nine billion, five hundred fifty-seven million, seven hundred seventy-five thousand, three hundred twenty-eight".