2666302041261 has 24 divisors (see below), whose sum is σ = 3719213020096. Its totient is φ = 1698944385600.

The previous prime is 2666302041251. The next prime is 2666302041289. The reversal of 2666302041261 is 1621402036662.

It is not a de Polignac number, because 2666302041261 - 2¹¹ = 2666302039213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666302041251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1423161 + ... + 2712561.

Almost surely, 2^{2666302041261} is an apocalyptic number.

It is an amenable number.

2666302041261 is a deficient number, since it is larger than the sum of its proper divisors (1052910978835).

2666302041261 is a wasteful number, since it uses less digits than its factorization.

2666302041261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290753 (or 1290730 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The spelling of 2666302041261 in words is "two trillion, six hundred sixty-six billion, three hundred two million, forty-one thousand, two hundred sixty-one".