1666835276011 has 16 divisors (see below), whose sum is σ = 1864930176000. Its totient is φ = 1481583362688.

The previous prime is 1666835276003. The next prime is 1666835276021. The reversal of 1666835276011 is 1106725386661.

It is a cyclic number.

It is not a de Polignac number, because 1666835276011 - 2³ = 1666835276003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1666835276011.

It is not an unprimeable number, because it can be changed into a prime (1666835276021) 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, 26950161 + ... + 27011938.

It is an arithmetic number, because the mean of its divisors is an integer number (116558136000).

Almost surely, 2^{1666835276011} is an apocalyptic number.

1666835276011 is a deficient number, since it is larger than the sum of its proper divisors (198094899989).

1666835276011 is a wasteful number, since it uses less digits than its factorization.

1666835276011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53962218.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 1666835276011 in words is "one trillion, six hundred sixty-six billion, eight hundred thirty-five million, two hundred seventy-six thousand, eleven".