64993824713 has 2 divisors, whose sum is σ = 64993824714. Its totient is φ = 64993824712.

The previous prime is 64993824641. The next prime is 64993824739. The reversal of 64993824713 is 31742839946.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64583073424 + 410751289 = 254132^2 + 20267^2 .

It is a cyclic number.

It is not a de Polignac number, because 64993824713 - 2²⁴ = 64977047497 is a prime.

It is not a weakly prime, because it can be changed into another prime (64993824773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32496912356 + 32496912357.

It is an arithmetic number, because the mean of its divisors is an integer number (32496912357).

Almost surely, 2^64993824713 is an apocalyptic number.

It is an amenable number.

64993824713 is a deficient number, since it is larger than the sum of its proper divisors (1).

64993824713 is an equidigital number, since it uses as much as digits as its factorization.

64993824713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7838208, while the sum is 56.

The spelling of 64993824713 in words is "sixty-four billion, nine hundred ninety-three million, eight hundred twenty-four thousand, seven hundred thirteen".