2666443097 has 2 divisors, whose sum is σ = 2666443098. Its totient is φ = 2666443096.

The previous prime is 2666443079. The next prime is 2666443141. The reversal of 2666443097 is 7903446662.

Together with previous prime (2666443079) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1420988416 + 1245454681 = 37696^2 + 35291^2 .

It is a cyclic number.

It is not a de Polignac number, because 2666443097 - 2⁸ = 2666442841 is a prime.

It is not a weakly prime, because it can be changed into another prime (2666443067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333221548 + 1333221549.

It is an arithmetic number, because the mean of its divisors is an integer number (1333221549).

Almost surely, 2^2666443097 is an apocalyptic number.

It is an amenable number.

2666443097 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666443097 is an equidigital number, since it uses as much as digits as its factorization.

2666443097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 47.

The square root of 2666443097 is about 51637.6132000696. The cubic root of 2666443097 is about 1386.6837939810.

The spelling of 2666443097 in words is "two billion, six hundred sixty-six million, four hundred forty-three thousand, ninety-seven".