436864544211649 has 2 divisors, whose sum is σ = 436864544211650. Its totient is φ = 436864544211648.

The previous prime is 436864544211643. The next prime is 436864544211661. The reversal of 436864544211649 is 946112445468634.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395576298810000 + 41288245401649 = 19889100^2 + 6425593^2 .

It is a cyclic number.

It is not a de Polignac number, because 436864544211649 - 2¹³ = 436864544203457 is a prime.

It is not a weakly prime, because it can be changed into another prime (436864544211643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 218432272105824 + 218432272105825.

It is an arithmetic number, because the mean of its divisors is an integer number (218432272105825).

Almost surely, 2^{436864544211649} is an apocalyptic number.

It is an amenable number.

436864544211649 is a deficient number, since it is larger than the sum of its proper divisors (1).

436864544211649 is an equidigital number, since it uses as much as digits as its factorization.

436864544211649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 477757440, while the sum is 67.

The spelling of 436864544211649 in words is "four hundred thirty-six trillion, eight hundred sixty-four billion, five hundred forty-four million, two hundred eleven thousand, six hundred forty-nine".