1688790027868 has 24 divisors (see below), whose sum is σ = 3057732956880. Its totient is φ = 815160433920.

The previous prime is 1688790027857. The next prime is 1688790027877. The reversal of 1688790027868 is 8687200978861.

It is a junction number, because it is equal to n+sod(n) for n = 1688790027797 and 1688790027806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238246 + ... + 1853197.

It is an arithmetic number, because the mean of its divisors is an integer number (127405539870).

Almost surely, 2^{1688790027868} is an apocalyptic number.

It is an amenable number.

1688790027868 is a deficient number, since it is larger than the sum of its proper divisors (1368942929012).

1688790027868 is a wasteful number, since it uses less digits than its factorization.

1688790027868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2098437 (or 2098435 counting only the distinct ones).

The product of its (nonzero) digits is 130056192, while the sum is 70.

The spelling of 1688790027868 in words is "one trillion, six hundred eighty-eight billion, seven hundred ninety million, twenty-seven thousand, eight hundred sixty-eight".