667400340011 has 2 divisors, whose sum is σ = 667400340012. Its totient is φ = 667400340010.

The previous prime is 667400339989. The next prime is 667400340067. The reversal of 667400340011 is 110043004766.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 667400340011 - 2¹⁰ = 667400338987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 667400340011.

It is not a weakly prime, because it can be changed into another prime (667400345011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333700170005 + 333700170006.

It is an arithmetic number, because the mean of its divisors is an integer number (333700170006).

Almost surely, 2^667400340011 is an apocalyptic number.

667400340011 is a deficient number, since it is larger than the sum of its proper divisors (1).

667400340011 is an equidigital number, since it uses as much as digits as its factorization.

667400340011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 32.

Adding to 667400340011 its reverse (110043004766), we get a palindrome (777443344777).

The spelling of 667400340011 in words is "six hundred sixty-seven billion, four hundred million, three hundred forty thousand, eleven".