912787248689 has 2 divisors, whose sum is σ = 912787248690. Its totient is φ = 912787248688.

The previous prime is 912787248661. The next prime is 912787248697. The reversal of 912787248689 is 986842787219.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 623929371664 + 288857877025 = 789892^2 + 537455^2 .

It is a cyclic number.

It is not a de Polignac number, because 912787248689 - 2⁸ = 912787248433 is a prime.

It is a super-2 number, since 2×912787248689² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (912787248089) 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, 456393624344 + 456393624345.

It is an arithmetic number, because the mean of its divisors is an integer number (456393624345).

Almost surely, 2^912787248689 is an apocalyptic number.

It is an amenable number.

912787248689 is a deficient number, since it is larger than the sum of its proper divisors (1).

912787248689 is an equidigital number, since it uses as much as digits as its factorization.

912787248689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 195084288, while the sum is 71.

The spelling of 912787248689 in words is "nine hundred twelve billion, seven hundred eighty-seven million, two hundred forty-eight thousand, six hundred eighty-nine".