3244947366721 has 2 divisors, whose sum is σ = 3244947366722. Its totient is φ = 3244947366720.

The previous prime is 3244947366719. The next prime is 3244947366821. The reversal of 3244947366721 is 1276637494423.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2491627523121 + 753319843600 = 1578489^2 + 867940^2 .

It is a cyclic number.

It is not a de Polignac number, because 3244947366721 - 2¹ = 3244947366719 is a prime.

Together with 3244947366719, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3244947366701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1622473683360 + 1622473683361.

It is an arithmetic number, because the mean of its divisors is an integer number (1622473683361).

Almost surely, 2^{3244947366721} is an apocalyptic number.

It is an amenable number.

3244947366721 is a deficient number, since it is larger than the sum of its proper divisors (1).

3244947366721 is an equidigital number, since it uses as much as digits as its factorization.

3244947366721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36578304, while the sum is 58.

The spelling of 3244947366721 in words is "three trillion, two hundred forty-four billion, nine hundred forty-seven million, three hundred sixty-six thousand, seven hundred twenty-one".