19287008240641 has 2 divisors, whose sum is σ = 19287008240642. Its totient is φ = 19287008240640.

The previous prime is 19287008240567. The next prime is 19287008240651. The reversal of 19287008240641 is 14604280078291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17869253657616 + 1417754583025 = 4227204^2 + 1190695^2 .

It is a cyclic number.

It is not a de Polignac number, because 19287008240641 - 2²⁹ = 19286471369729 is a prime.

It is not a weakly prime, because it can be changed into another prime (19287008240651) 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, 9643504120320 + 9643504120321.

It is an arithmetic number, because the mean of its divisors is an integer number (9643504120321).

Almost surely, 2^{19287008240641} is an apocalyptic number.

It is an amenable number.

19287008240641 is a deficient number, since it is larger than the sum of its proper divisors (1).

19287008240641 is an equidigital number, since it uses as much as digits as its factorization.

19287008240641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1548288, while the sum is 52.

The spelling of 19287008240641 in words is "nineteen trillion, two hundred eighty-seven billion, eight million, two hundred forty thousand, six hundred forty-one".