1686328866580 has 48 divisors (see below), whose sum is σ = 3629323595520. Its totient is φ = 657969107328.

The previous prime is 1686328866559. The next prime is 1686328866601. The reversal of 1686328866580 is 856688236861.

It is an interprime number because it is at equal distance from previous prime (1686328866559) and next prime (1686328866601).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6298359 + ... + 6560638.

It is an arithmetic number, because the mean of its divisors is an integer number (75610908240).

Almost surely, 2^{1686328866580} is an apocalyptic number.

1686328866580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1686328866580 is an abundant number, since it is smaller than the sum of its proper divisors (1942994728940).

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

1686328866580 is a wasteful number, since it uses less digits than its factorization.

1686328866580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12859168 (or 12859166 counting only the distinct ones).

The product of its (nonzero) digits is 159252480, while the sum is 67.

The spelling of 1686328866580 in words is "one trillion, six hundred eighty-six billion, three hundred twenty-eight million, eight hundred sixty-six thousand, five hundred eighty".