487661041366409 has 2 divisors, whose sum is σ = 487661041366410. Its totient is φ = 487661041366408.

The previous prime is 487661041366397. The next prime is 487661041366417. The reversal of 487661041366409 is 904663140166784.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 487465814362384 + 195227004025 = 22078628^2 + 441845^2 .

It is a cyclic number.

It is not a de Polignac number, because 487661041366409 - 2⁸ = 487661041366153 is a prime.

It is not a weakly prime, because it can be changed into another prime (487661041306409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243830520683204 + 243830520683205.

It is an arithmetic number, because the mean of its divisors is an integer number (243830520683205).

Almost surely, 2^{487661041366409} is an apocalyptic number.

It is an amenable number.

487661041366409 is a deficient number, since it is larger than the sum of its proper divisors (1).

487661041366409 is an equidigital number, since it uses as much as digits as its factorization.

487661041366409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 125411328, while the sum is 65.

The spelling of 487661041366409 in words is "four hundred eighty-seven trillion, six hundred sixty-one billion, forty-one million, three hundred sixty-six thousand, four hundred nine".