3640768864417 has 2 divisors, whose sum is σ = 3640768864418. Its totient is φ = 3640768864416.

The previous prime is 3640768864393. The next prime is 3640768864457. The reversal of 3640768864417 is 7144688670463.

It is a happy number.

3640768864417 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., 2321856727696 + 1318912136721 = 1523764^2 + 1148439^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3640768864417 is a prime.

It is not a weakly prime, because it can be changed into another prime (3640768864457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1820384432208 + 1820384432209.

It is an arithmetic number, because the mean of its divisors is an integer number (1820384432209).

Almost surely, 2^{3640768864417} is an apocalyptic number.

It is an amenable number.

3640768864417 is a deficient number, since it is larger than the sum of its proper divisors (1).

3640768864417 is an equidigital number, since it uses as much as digits as its factorization.

3640768864417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 130056192, while the sum is 64.

The spelling of 3640768864417 in words is "three trillion, six hundred forty billion, seven hundred sixty-eight million, eight hundred sixty-four thousand, four hundred seventeen".