64222647449 has 2 divisors, whose sum is σ = 64222647450. Its totient is φ = 64222647448.

The previous prime is 64222647367. The next prime is 64222647499. The reversal of 64222647449 is 94474622246.

It is an a-pointer prime, because the next prime (64222647499) can be obtained adding 64222647449 to its sum of digits (50).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64132017049 + 90630400 = 253243^2 + 9520^2 .

It is a cyclic number.

It is not a de Polignac number, because 64222647449 - 2⁸ = 64222647193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64222647397 and 64222647406.

It is not a weakly prime, because it can be changed into another prime (64222647499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32111323724 + 32111323725.

It is an arithmetic number, because the mean of its divisors is an integer number (32111323725).

Almost surely, 2^64222647449 is an apocalyptic number.

It is an amenable number.

64222647449 is a deficient number, since it is larger than the sum of its proper divisors (1).

64222647449 is an equidigital number, since it uses as much as digits as its factorization.

64222647449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4644864, while the sum is 50.

The spelling of 64222647449 in words is "sixty-four billion, two hundred twenty-two million, six hundred forty-seven thousand, four hundred forty-nine".