664079863313 has 2 divisors, whose sum is σ = 664079863314. Its totient is φ = 664079863312.

The previous prime is 664079863309. The next prime is 664079863319. The reversal of 664079863313 is 313368970466.

664079863313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 482924925184 + 181154938129 = 694928^2 + 425623^2 .

It is a cyclic number.

It is not a de Polignac number, because 664079863313 - 2² = 664079863309 is a prime.

It is not a weakly prime, because it can be changed into another prime (664079863319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332039931656 + 332039931657.

It is an arithmetic number, because the mean of its divisors is an integer number (332039931657).

Almost surely, 2^664079863313 is an apocalyptic number.

It is an amenable number.

664079863313 is a deficient number, since it is larger than the sum of its proper divisors (1).

664079863313 is an equidigital number, since it uses as much as digits as its factorization.

664079863313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11757312, while the sum is 56.

The spelling of 664079863313 in words is "six hundred sixty-four billion, seventy-nine million, eight hundred sixty-three thousand, three hundred thirteen".