127249246609 has 2 divisors, whose sum is σ = 127249246610. Its totient is φ = 127249246608.

The previous prime is 127249246559. The next prime is 127249246633. The reversal of 127249246609 is 906642942721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127249158400 + 88209 = 356720^2 + 297^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127249246609 is a prime.

It is not a weakly prime, because it can be changed into another prime (127249246639) 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, 63624623304 + 63624623305.

It is an arithmetic number, because the mean of its divisors is an integer number (63624623305).

Almost surely, 2^127249246609 is an apocalyptic number.

It is an amenable number.

127249246609 is a deficient number, since it is larger than the sum of its proper divisors (1).

127249246609 is an equidigital number, since it uses as much as digits as its factorization.

127249246609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 127249246609 in words is "one hundred twenty-seven billion, two hundred forty-nine million, two hundred forty-six thousand, six hundred nine".