276645129969217 has 2 divisors, whose sum is σ = 276645129969218. Its totient is φ = 276645129969216.

The previous prime is 276645129969181. The next prime is 276645129969311. The reversal of 276645129969217 is 712969921546672.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 262327389682576 + 14317740286641 = 16196524^2 + 3783879^2 .

It is a cyclic number.

It is not a de Polignac number, because 276645129969217 - 2¹¹ = 276645129967169 is a prime.

It is not a weakly prime, because it can be changed into another prime (276645129969017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138322564984608 + 138322564984609.

It is an arithmetic number, because the mean of its divisors is an integer number (138322564984609).

Almost surely, 2^{276645129969217} is an apocalyptic number.

It is an amenable number.

276645129969217 is a deficient number, since it is larger than the sum of its proper divisors (1).

276645129969217 is an equidigital number, since it uses as much as digits as its factorization.

276645129969217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1234517760, while the sum is 76.

The spelling of 276645129969217 in words is "two hundred seventy-six trillion, six hundred forty-five billion, one hundred twenty-nine million, nine hundred sixty-nine thousand, two hundred seventeen".