340666511249 has 2 divisors, whose sum is σ = 340666511250. Its totient is φ = 340666511248.

The previous prime is 340666511173. The next prime is 340666511257. The reversal of 340666511249 is 942115666043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 323920339600 + 16746171649 = 569140^2 + 129407^2 .

It is a cyclic number.

It is not a de Polignac number, because 340666511249 - 2²⁸ = 340398075793 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (340666511279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170333255624 + 170333255625.

It is an arithmetic number, because the mean of its divisors is an integer number (170333255625).

Almost surely, 2^340666511249 is an apocalyptic number.

It is an amenable number.

340666511249 is a deficient number, since it is larger than the sum of its proper divisors (1).

340666511249 is an equidigital number, since it uses as much as digits as its factorization.

340666511249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 340666511249 in words is "three hundred forty billion, six hundred sixty-six million, five hundred eleven thousand, two hundred forty-nine".