6671240514689 has 2 divisors, whose sum is σ = 6671240514690. Its totient is φ = 6671240514688.

The previous prime is 6671240514649. The next prime is 6671240514733. The reversal of 6671240514689 is 9864150421766.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5737102800625 + 934137714064 = 2395225^2 + 966508^2 .

It is a cyclic number.

It is not a de Polignac number, because 6671240514689 - 2³² = 6666945547393 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 (6671240514629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3335620257344 + 3335620257345.

It is an arithmetic number, because the mean of its divisors is an integer number (3335620257345).

Almost surely, 2^{6671240514689} is an apocalyptic number.

It is an amenable number.

6671240514689 is a deficient number, since it is larger than the sum of its proper divisors (1).

6671240514689 is an equidigital number, since it uses as much as digits as its factorization.

6671240514689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17418240, while the sum is 59.

The spelling of 6671240514689 in words is "six trillion, six hundred seventy-one billion, two hundred forty million, five hundred fourteen thousand, six hundred eighty-nine".