1688064387846 has 32 divisors (see below), whose sum is σ = 3456162124800. Its totient is φ = 549481963680.

The previous prime is 1688064387811. The next prime is 1688064387847. The reversal of 1688064387846 is 6487834608861.

It is a super-2 number, since 2×1688064387846² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1688064387847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16539766 + ... + 16641513.

It is an arithmetic number, because the mean of its divisors is an integer number (108005066400).

Almost surely, 2^{1688064387846} is an apocalyptic number.

1688064387846 is an abundant number, since it is smaller than the sum of its proper divisors (1768097736954).

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

1688064387846 is a wasteful number, since it uses less digits than its factorization.

1688064387846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33181484.

The product of its (nonzero) digits is 297271296, while the sum is 69.

The spelling of 1688064387846 in words is "one trillion, six hundred eighty-eight billion, sixty-four million, three hundred eighty-seven thousand, eight hundred forty-six".