1686683383555 has 8 divisors (see below), whose sum is σ = 2089311030144. Its totient is φ = 1305819393600.

The previous prime is 1686683383549. The next prime is 1686683383571. The reversal of 1686683383555 is 5553833866861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1686683383555 - 2³⁹ = 1136927569667 is a prime.

It is a Duffinian 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, 5440913986 + ... + 5440914295.

It is an arithmetic number, because the mean of its divisors is an integer number (261163878768).

Almost surely, 2^{1686683383555} is an apocalyptic number.

1686683383555 is a deficient number, since it is larger than the sum of its proper divisors (402627646589).

1686683383555 is a wasteful number, since it uses less digits than its factorization.

1686683383555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10881828317.

The product of its digits is 373248000, while the sum is 67.

The spelling of 1686683383555 in words is "one trillion, six hundred eighty-six billion, six hundred eighty-three million, three hundred eighty-three thousand, five hundred fifty-five".