12565783101827 has 2 divisors, whose sum is σ = 12565783101828. Its totient is φ = 12565783101826.

The previous prime is 12565783101803. The next prime is 12565783101887. The reversal of 12565783101827 is 72810138756521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12565783101827 - 2⁶ = 12565783101763 is a prime.

It is not a weakly prime, because it can be changed into another prime (12565783101887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6282891550913 + 6282891550914.

It is an arithmetic number, because the mean of its divisors is an integer number (6282891550914).

Almost surely, 2^{12565783101827} is an apocalyptic number.

12565783101827 is a deficient number, since it is larger than the sum of its proper divisors (1).

12565783101827 is an equidigital number, since it uses as much as digits as its factorization.

12565783101827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5644800, while the sum is 56.

The spelling of 12565783101827 in words is "twelve trillion, five hundred sixty-five billion, seven hundred eighty-three million, one hundred one thousand, eight hundred twenty-seven".