64864743117329 has 2 divisors, whose sum is σ = 64864743117330. Its totient is φ = 64864743117328.

The previous prime is 64864743117323. The next prime is 64864743117337. The reversal of 64864743117329 is 92371134746846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59839739428225 + 5025003689104 = 7735615^2 + 2241652^2 .

It is a cyclic number.

It is not a de Polignac number, because 64864743117329 - 2¹⁶ = 64864743051793 is a prime.

It is not a weakly prime, because it can be changed into another prime (64864743117323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32432371558664 + 32432371558665.

It is an arithmetic number, because the mean of its divisors is an integer number (32432371558665).

Almost surely, 2^{64864743117329} is an apocalyptic number.

It is an amenable number.

64864743117329 is a deficient number, since it is larger than the sum of its proper divisors (1).

64864743117329 is an equidigital number, since it uses as much as digits as its factorization.

64864743117329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 146313216, while the sum is 65.

The spelling of 64864743117329 in words is "sixty-four trillion, eight hundred sixty-four billion, seven hundred forty-three million, one hundred seventeen thousand, three hundred twenty-nine".