64465321206529 has 2 divisors, whose sum is σ = 64465321206530. Its totient is φ = 64465321206528.

The previous prime is 64465321206499. The next prime is 64465321206563. The reversal of 64465321206529 is 92560212356446.

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., 58363136738929 + 6102184467600 = 7639577^2 + 2470260^2 .

It is a cyclic number.

It is not a de Polignac number, because 64465321206529 - 2⁵ = 64465321206497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64465321206529.

It is not a weakly prime, because it can be changed into another prime (64465321206329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32232660603264 + 32232660603265.

It is an arithmetic number, because the mean of its divisors is an integer number (32232660603265).

Almost surely, 2^{64465321206529} is an apocalyptic number.

It is an amenable number.

64465321206529 is a deficient number, since it is larger than the sum of its proper divisors (1).

64465321206529 is an equidigital number, since it uses as much as digits as its factorization.

64465321206529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18662400, while the sum is 55.

The spelling of 64465321206529 in words is "sixty-four trillion, four hundred sixty-five billion, three hundred twenty-one million, two hundred six thousand, five hundred twenty-nine".