1686085115994 has 12 divisors (see below), whose sum is σ = 3653184418026. Its totient is φ = 562028371992.

The previous prime is 1686085115989. The next prime is 1686085116013. The reversal of 1686085115994 is 4995115806861.

1686085115994 is a `hidden beast` number, since 1 + 6 + 8 + 60 + 8 + 511 + 59 + 9 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1670569175025 + 15515940969 = 1292505^2 + 124563^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46835697649 + ... + 46835697684.

Almost surely, 2^{1686085115994} is an apocalyptic number.

1686085115994 is an abundant number, since it is smaller than the sum of its proper divisors (1967099302032).

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

1686085115994 is a wasteful number, since it uses less digits than its factorization.

1686085115994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93671395341 (or 93671395338 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 63.

The spelling of 1686085115994 in words is "one trillion, six hundred eighty-six billion, eighty-five million, one hundred fifteen thousand, nine hundred ninety-four".