2066261270041 has 4 divisors (see below), whose sum is σ = 2067439971892. Its totient is φ = 2065082568192.

The previous prime is 2066261269991. The next prime is 2066261270069. The reversal of 2066261270041 is 1400721626602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 354078552025 + 1712182718016 = 595045^2 + 1308504^2 .

It is a cyclic number.

It is not a de Polignac number, because 2066261270041 - 2⁹ = 2066261269529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2066261270071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 589348296 + ... + 589351801.

It is an arithmetic number, because the mean of its divisors is an integer number (516859992973).

Almost surely, 2^{2066261270041} is an apocalyptic number.

It is an amenable number.

2066261270041 is a deficient number, since it is larger than the sum of its proper divisors (1178701851).

2066261270041 is a wasteful number, since it uses less digits than its factorization.

2066261270041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178701850.

The product of its (nonzero) digits is 48384, while the sum is 37.

Adding to 2066261270041 its reverse (1400721626602), we get a palindrome (3466982896643).

The spelling of 2066261270041 in words is "two trillion, sixty-six billion, two hundred sixty-one million, two hundred seventy thousand, forty-one".