2160306203666 has 16 divisors (see below), whose sum is σ = 3498427979928. Its totient is φ = 994577952000.

The previous prime is 2160306203647. The next prime is 2160306203717. The reversal of 2160306203666 is 6663026030612.

It can be written as a sum of positive squares in 4 ways, for example, as 1969180725625 + 191125478041 = 1403275^2 + 437179^2 .

It is a Curzon 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, 103591445 + ... + 103612296.

Almost surely, 2^{2160306203666} is an apocalyptic number.

2160306203666 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2160306203666 is a deficient number, since it is larger than the sum of its proper divisors (1338121776262).

2160306203666 is a wasteful number, since it uses less digits than its factorization.

2160306203666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207204157.

The product of its (nonzero) digits is 279936, while the sum is 41.

The spelling of 2160306203666 in words is "two trillion, one hundred sixty billion, three hundred six million, two hundred three thousand, six hundred sixty-six".