6662851009 has 2 divisors, whose sum is σ = 6662851010. Its totient is φ = 6662851008.

The previous prime is 6662850983. The next prime is 6662851031. The reversal of 6662851009 is 9001582666.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3997400625 + 2665450384 = 63225^2 + 51628^2 .

It is a cyclic number.

It is not a de Polignac number, because 6662851009 - 2¹¹ = 6662848961 is a prime.

It is not a weakly prime, because it can be changed into another prime (6662851099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3331425504 + 3331425505.

It is an arithmetic number, because the mean of its divisors is an integer number (3331425505).

Almost surely, 2^6662851009 is an apocalyptic number.

It is an amenable number.

6662851009 is a deficient number, since it is larger than the sum of its proper divisors (1).

6662851009 is an equidigital number, since it uses as much as digits as its factorization.

6662851009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 6662851009 is about 81626.2887126445. The cubic root of 6662851009 is about 1881.7129221026.

The spelling of 6662851009 in words is "six billion, six hundred sixty-two million, eight hundred fifty-one thousand, nine".