1685336866666 has 16 divisors (see below), whose sum is σ = 2662572026304. Its totient is φ = 798497676064.

The previous prime is 1685336866663. The next prime is 1685336866693. The reversal of 1685336866666 is 6666686335861.

It is a junction number, because it is equal to n+sod(n) for n = 1685336866595 and 1685336866604.

It is not an unprimeable number, because it can be changed into a prime (1685336866663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171199555 + ... + 171209398.

It is an arithmetic number, because the mean of its divisors is an integer number (166410751644).

Almost surely, 2^{1685336866666} is an apocalyptic number.

1685336866666 is a deficient number, since it is larger than the sum of its proper divisors (977235159638).

1685336866666 is a wasteful number, since it uses less digits than its factorization.

1685336866666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342409085.

The product of its digits is 806215680, while the sum is 70.

The spelling of 1685336866666 in words is "one trillion, six hundred eighty-five billion, three hundred thirty-six million, eight hundred sixty-six thousand, six hundred sixty-six".