2666443141 has 2 divisors, whose sum is σ = 2666443142. Its totient is φ = 2666443140.

The previous prime is 2666443097. The next prime is 2666443229. The reversal of 2666443141 is 1413446662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2260622116 + 405821025 = 47546^2 + 20145^2 .

It is a cyclic number.

It is not a de Polignac number, because 2666443141 - 2¹⁷ = 2666312069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2666443141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2666443441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333221570 + 1333221571.

It is an arithmetic number, because the mean of its divisors is an integer number (1333221571).

Almost surely, 2^2666443141 is an apocalyptic number.

It is an amenable number.

2666443141 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666443141 is an equidigital number, since it uses as much as digits as its factorization.

2666443141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 37.

The square root of 2666443141 is about 51637.6136261156. The cubic root of 2666443141 is about 1386.6838016084.

The spelling of 2666443141 in words is "two billion, six hundred sixty-six million, four hundred forty-three thousand, one hundred forty-one".