16768041685 has 16 divisors (see below), whose sum is σ = 20607591024. Its totient is φ = 13093097472.

The previous prime is 16768041679. The next prime is 16768041691. The reversal of 16768041685 is 58614086761.

It is an interprime number because it is at equal distance from previous prime (16768041679) and next prime (16768041691).

It can be written as a sum of positive squares in 8 ways, for example, as 3060081124 + 13707960561 = 55318^2 + 117081^2 .

It is a cyclic number.

It is not a de Polignac number, because 16768041685 - 2³ = 16768041677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112782 + ... + 215071.

It is an arithmetic number, because the mean of its divisors is an integer number (1287974439).

Almost surely, 2^16768041685 is an apocalyptic number.

It is an amenable number.

16768041685 is a deficient number, since it is larger than the sum of its proper divisors (3839549339).

16768041685 is a wasteful number, since it uses less digits than its factorization.

16768041685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328104.

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 16768041685 in words is "sixteen billion, seven hundred sixty-eight million, forty-one thousand, six hundred eighty-five".