244011868561 has 2 divisors, whose sum is σ = 244011868562. Its totient is φ = 244011868560.

The previous prime is 244011868547. The next prime is 244011868603. The reversal of 244011868561 is 165868110442.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144594625536 + 99417243025 = 380256^2 + 315305^2 .

It is a cyclic number.

It is not a de Polignac number, because 244011868561 - 2²⁷ = 243877650833 is a prime.

It is not a weakly prime, because it can be changed into another prime (244011868861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122005934280 + 122005934281.

It is an arithmetic number, because the mean of its divisors is an integer number (122005934281).

Almost surely, 2^244011868561 is an apocalyptic number.

It is an amenable number.

244011868561 is a deficient number, since it is larger than the sum of its proper divisors (1).

244011868561 is an equidigital number, since it uses as much as digits as its factorization.

244011868561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 368640, while the sum is 46.

The spelling of 244011868561 in words is "two hundred forty-four billion, eleven million, eight hundred sixty-eight thousand, five hundred sixty-one".