16868703685 has 8 divisors (see below), whose sum is σ = 20244831480. Its totient is φ = 13493371584.

The previous prime is 16868703659. The next prime is 16868703697. The reversal of 16868703685 is 58630786861.

It can be written as a sum of positive squares in 4 ways, for example, as 1698593796 + 15170109889 = 41214^2 + 123167^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 16868703685 - 2¹⁹ = 16868179397 is a prime.

It is a congruent 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, 151242 + ... + 237931.

It is an arithmetic number, because the mean of its divisors is an integer number (2530603935).

Almost surely, 2^16868703685 is an apocalyptic number.

It is an amenable number.

16868703685 is a deficient number, since it is larger than the sum of its proper divisors (3376127795).

16868703685 is an equidigital number, since it uses as much as digits as its factorization.

16868703685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397847.

The product of its (nonzero) digits is 11612160, while the sum is 58.

The spelling of 16868703685 in words is "sixteen billion, eight hundred sixty-eight million, seven hundred three thousand, six hundred eighty-five".