1685185166667 has 32 divisors (see below), whose sum is σ = 2277013192704. Its totient is φ = 1108498010400.

The previous prime is 1685185166633. The next prime is 1685185166719. The reversal of 1685185166667 is 7666615815861.

It is not a de Polignac number, because 1685185166667 - 2¹⁵ = 1685185133899 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1685185166598 and 1685185166607.

It is not an unprimeable number, because it can be changed into a prime (1685185166167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115487542 + ... + 115502132.

It is an arithmetic number, because the mean of its divisors is an integer number (71156662272).

Almost surely, 2^{1685185166667} is an apocalyptic number.

1685185166667 is a deficient number, since it is larger than the sum of its proper divisors (591828026037).

1685185166667 is a wasteful number, since it uses less digits than its factorization.

1685185166667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16119.

The product of its digits is 87091200, while the sum is 66.

The spelling of 1685185166667 in words is "one trillion, six hundred eighty-five billion, one hundred eighty-five million, one hundred sixty-six thousand, six hundred sixty-seven".