1685018516685 has 16 divisors (see below), whose sum is σ = 3081176716416. Its totient is φ = 770294179008.

The previous prime is 1685018516663. The next prime is 1685018516689. The reversal of 1685018516685 is 5866158105861.

It is not a de Polignac number, because 1685018516685 - 2¹¹ = 1685018514637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1685018516689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8023897594 + ... + 8023897803.

It is an arithmetic number, because the mean of its divisors is an integer number (192573544776).

Almost surely, 2^{1685018516685} is an apocalyptic number.

1685018516685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1685018516685 is a deficient number, since it is larger than the sum of its proper divisors (1396158199731).

1685018516685 is a wasteful number, since it uses less digits than its factorization.

1685018516685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16047795412.

The product of its (nonzero) digits is 13824000, while the sum is 60.

The spelling of 1685018516685 in words is "one trillion, six hundred eighty-five billion, eighteen million, five hundred sixteen thousand, six hundred eighty-five".