16868366661 has 16 divisors (see below), whose sum is σ = 22875956480. Its totient is φ = 11053437120.

The previous prime is 16868366633. The next prime is 16868366677. The reversal of 16868366661 is 16666386861.

It is not a de Polignac number, because 16868366661 - 2⁶ = 16868366597 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16868361661) 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, 234180 + ... + 297618.

It is an arithmetic number, because the mean of its divisors is an integer number (1429747280).

Almost surely, 2^16868366661 is an apocalyptic number.

It is an amenable number.

16868366661 is a deficient number, since it is larger than the sum of its proper divisors (6007589819).

16868366661 is a wasteful number, since it uses less digits than its factorization.

16868366661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64956.

The product of its digits is 8957952, while the sum is 57.

The spelling of 16868366661 in words is "sixteen billion, eight hundred sixty-eight million, three hundred sixty-six thousand, six hundred sixty-one".