1689123695346 has 48 divisors (see below), whose sum is σ = 3662346391704. Its totient is φ = 562644732672.

The previous prime is 1689123695323. The next prime is 1689123695353. The reversal of 1689123695346 is 6435963219861.

1689123695346 is a `hidden beast` number, since 1 + 6 + 8 + 91 + 2 + 3 + 6 + 9 + 534 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1311219657225 + 377904038121 = 1145085^2 + 614739^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 227242846 + ... + 227250278.

Almost surely, 2^{1689123695346} is an apocalyptic number.

1689123695346 is an abundant number, since it is smaller than the sum of its proper divisors (1973222696358).

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

1689123695346 is a wasteful number, since it uses less digits than its factorization.

1689123695346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14635 (or 14632 counting only the distinct ones).

The product of its digits is 50388480, while the sum is 63.

The spelling of 1689123695346 in words is "one trillion, six hundred eighty-nine billion, one hundred twenty-three million, six hundred ninety-five thousand, three hundred forty-six".