64642422226289 has 2 divisors, whose sum is σ = 64642422226290. Its totient is φ = 64642422226288.

The previous prime is 64642422226199. The next prime is 64642422226297. The reversal of 64642422226289 is 98262222424646.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49901621835664 + 14740800390625 = 7064108^2 + 3839375^2 .

It is a cyclic number.

It is not a de Polignac number, because 64642422226289 - 2⁴⁰ = 63542910598513 is a prime.

It is not a weakly prime, because it can be changed into another prime (64642422226489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32321211113144 + 32321211113145.

It is an arithmetic number, because the mean of its divisors is an integer number (32321211113145).

Almost surely, 2^{64642422226289} is an apocalyptic number.

It is an amenable number.

64642422226289 is a deficient number, since it is larger than the sum of its proper divisors (1).

64642422226289 is an equidigital number, since it uses as much as digits as its factorization.

64642422226289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63700992, while the sum is 59.

The spelling of 64642422226289 in words is "sixty-four trillion, six hundred forty-two billion, four hundred twenty-two million, two hundred twenty-six thousand, two hundred eighty-nine".