1228454256767 has 2 divisors, whose sum is σ = 1228454256768. Its totient is φ = 1228454256766.

The previous prime is 1228454256727. The next prime is 1228454256793. The reversal of 1228454256767 is 7676524548221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1228454256767 - 2⁶ = 1228454256703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1228454256727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614227128383 + 614227128384.

It is an arithmetic number, because the mean of its divisors is an integer number (614227128384).

Almost surely, 2^{1228454256767} is an apocalyptic number.

1228454256767 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228454256767 is an equidigital number, since it uses as much as digits as its factorization.

1228454256767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45158400, while the sum is 59.

The spelling of 1228454256767 in words is "one trillion, two hundred twenty-eight billion, four hundred fifty-four million, two hundred fifty-six thousand, seven hundred sixty-seven".