6664311013 has 2 divisors, whose sum is σ = 6664311014. Its totient is φ = 6664311012.

The previous prime is 6664311007. The next prime is 6664311053. The reversal of 6664311013 is 3101134666.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4615571844 + 2048739169 = 67938^2 + 45263^2 .

It is a cyclic number.

It is not a de Polignac number, because 6664311013 - 2²⁵ = 6630756581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6664311053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3332155506 + 3332155507.

It is an arithmetic number, because the mean of its divisors is an integer number (3332155507).

Almost surely, 2^6664311013 is an apocalyptic number.

It is an amenable number.

6664311013 is a deficient number, since it is larger than the sum of its proper divisors (1).

6664311013 is an equidigital number, since it uses as much as digits as its factorization.

6664311013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 6664311013 is about 81635.2314445179. The cubic root of 6664311013 is about 1881.8503561502.

Adding to 6664311013 its reverse (3101134666), we get a palindrome (9765445679).

The spelling of 6664311013 in words is "six billion, six hundred sixty-four million, three hundred eleven thousand, thirteen".